Computational Electromagnetics: from Metamaterials to Particle Accelerators

Size: px
Start display at page:

Download "Computational Electromagnetics: from Metamaterials to Particle Accelerators"

Transcription

1 Computational Electromagnetics: from Metamaterials to Particle Accelerators Arya Fallahi Ultrafast optics and X-ray Division 1. July 213

2 2/44 Outline Ø Frequency Selective Surfaces (FSS) Analysis techniques: Diffraction Analysis Basis Functions Dispersion Analysis Design and optimization of FSS Ø Graphene metasurfaces Ø Particle accelerators Ø Bunch acceleration in THz waveguides Bunch Compression in THz waveguides Conclusion

3 Frequency Surfaces FrequencySelective Selective Surfaces (FSS) Reflector antennas Radome design 3/44 3/3 Polarizers Beam splitters

4 4/44 4/3 Frequency Selective Surfaces A 2D array of patches printed on a grounded substrate can perform as 1. artificial magnetic conductor (AMC) 2. radar absorbing surface patches lossy substrate PEC F. Yang et. al, MTT-47, 1999 D. Kern et. al, Microwave & Opt. Tech. Lett., 23

5 5/44 Diffraction Analysis of FSS FSS with homogeneous substrate (MoM) Boundary condition on the patch: From the theory of Green s function known variable unknown variable Method of Moments (MoM) known operator

6 Diffraction Analysis of FSS 6/44

7 7/44 Diffraction Analysis of FSS z FSS with periodic substrate (MoM/TL) incident wave Solved using MoM Lx Ly y periodic substrate x Computed using the coupled multiconductor transmission line (TL) model arbitrarily shaped patches coupled multiconductor transmission lines MoM/TL method Fallahi et al. Elsevier Metamaterials, Oct. 29.

8 8/44 Diffraction Analysis of FSS FSS with periodic substrate (MoM/TL)

9 9/44 Diffraction Analysis of FSS FSS with periodic substrate (MoM/TL) Better control over the substrate properties plane-wave patches Shifting resonance frequencies Increasing or decreasing the number of resonances Coupling of different diffraction orders within the substrate periodic substrates homogenous substrates More degrees of freedom in the design

10 1/44 Basis Functions The most critical point concerning the selection of basis functions: The normal component of the current at the boundary should vanish. Subdomain basis functions Rooftop basis functions Surface patch basis functions

11 11/44 Basis Functions Entire domain basis functions Boundary Integral Resonant Mode Expansion (BI-RME) PEC Ht Transverse magnetic fields of the guided modes Hn= Entire domain basis functions TM mode TE mode Fallahi et al. IEEE TAP - 58, March 21.

12 12/44 Basis Functions Largely overlapping subdomain basis functions Problems with the MoM/BI-RME: 1) Long computation time for basis functions 2) Sophisticated implementation of BI-RME Fallahi et al. IEEE MTT 21

13 13/44 Basis Functions Largely overlapping subdomain basis functions

14 Dispersion Analysis of FSS 14/44

15 Dispersion Analysis of FSS 15/44 Energy coupling technique z p x prism y air h(k z ) air r r j r (a) (b) For a grounded substrate, I=R for all frequencies except the resonance points.

16 Dispersion Analysis of FSS 16/44 Energy coupling technique Band diagram is obtained by finding the minima of the reflection spectrum. Fallahi et al. Antenna & Prop. Symp. July 28

17 Designing FSS Structures 17/44 Efficient procedures for FSS optimization Unit cell is divided to an N N grid, and encoded to a binary string. no patch metallic patch Fitness function is defined based on the reflection spectrum from the FSS. A brute-force simulation of all the possible cases is done. Each optimization algorithm is run 1 times to obtain reliable statistical data about its efficiency.

18 Designing FSS Structures 18/44 Efficient procedures for FSS optimization Probabilities of finding global optimum in percent M STAT av MGA MGA MGA MUT MUT MUT RHC Fallahi et al. IEEE TAP - 56, May 28. Fallahi et al. CTN Journal, April 28.

19 Design of Thin Radar Absorbers 19/44 For the patch layer the unit cell is encoded into a 14 by 14 grid. It is demonstrated that considering one hole and optimizing its dimension leads to better absorbers. FSS absorber Perforated FSS absorber

20 Implementation of Radar Absorbers 2/44 Fabrication of radar absorbers Characterization of radar absorbers

21 Implementation of Radar Absorbers Homogeneous absorber 21/44 FSS absorber

22 Implementation of Radar Absorbers 22/44 Perforated FSS absorber Fallahi et al. IEEE TAP 21

23 23/44 Graphene Metasurfaces Dynamic Frequency Selective Surface periodic arrangement of metals in a surface with a dynamic response Varactor diodes Liquid crystals MEMS switches

24 24/44 Graphene Metasurfaces A promising solution to the mentioned problems is graphene 2D atomic lattice Electrons behaving as massless Dirac Fermions Large electron mobilities Transparent conductivity Large nonlinear Kerr effect Electrically tunable conductivity A 2D honeycomb lattice made of carbon atoms Electromagnetic properties of patterned graphene

25 25/44 Graphene Conductivity For modeling patterned graphene surfaces, graphene conductivity is needed. Kubo formalism The conductivity is dispersive, anisotropic, bias dependent and most important of all, it is an operator.

26 Modified PMoM for Graphene Metasurface 26/44 In the periodic Method of Moments, we work in the spectral domain:

27 Examples of Graphene Metasurfaces 27/44 L=1mm, D=7.5mm and d=1.25mm A. Fallahi and J. Perruisseau-Carrier, PRB, 212.

28 28/44 Examples of Graphene Metasurfaces E=V/nm E=2V/nm E=2V/nm Increasing the electric biasing causes the increase in the graphene conductivity and this in turn strengthens the resonances between adjacent patches.

29 Examples of Graphene Metasurfaces 29/44 Problems with the presented example: Effective performance needs very high bias electric fields Ø How this electrostatic biasing can be implemented without disturbing the FSS? Ø How the bias fields should be applied throughout the FSS? Ø Ø Solution: Double graphene layers with DC-connected patches

30 Examples of Graphene Metasurfaces 3/44 L = 5 µm, l =.5 µm, d = 1.25 µm, and D = 1.5 µm and the dielectric thickness is t = 5 nm.

31 Particle Accelerators 31/44 The concept of oscillating field accelerators was mainly proposed in 192s. A number of cavities with designed lengths are placed along the acceleration line and the electron beam gains energy from the cavity fields. This has been the basic concept of the various modern accelerators.

32 Particle Accelerators 32/44 Recently, there has been many studies on optical acceleration of particles. Due to small cross section of optical beams, acceleration of a very small amount of charge is feasible using laser-plasmon acceleration. THz acceleration of particles seems to be a good candidate.

33 33/44 Particle Accelerators The main challenges in this regime: 1) Large loss of the metals preclude the design of high-q cavities 2) The very limited available THz sources 3) The dissipated energy in the metallic walls are much larger than RF domain. The second difficulty is recently tackled by using optical rectification techniques to design THz sources. Short THz pulses can be efficiently generated from a reasonable laser intensity.

34 34/44 Bunch Acceleration in THz Waveguides Side view Dielectric r Vacuum Metal Electron bunch THz pulse 1 E z E r H 1.2 6,8 4, M a g n e tic F ie ld M a g n itu d e ( T ) End view E le c tr ic F ie ld M a g n itu d e ( G V /m ) 2 V a c u u m R a d iu s ( m ) Uniform longitudinal field at β=1

35 Bunch Acceleration in THz Waveguides 35/44 Optimization Very many parameters are involved in the acceleration level of electrons, including vp, vg, GVD, α, z and ψ. The best fitness function for optimization is the final energy of the electron. The problem of one electron is solved numerically, and the final energy of the electron is used as the figure of merit for the group of parameters.

36 36/44 Bunch Acceleration in THz Waveguides Optimization 6GHz operation frequency F in a l E n e r g y ( M e V ) Optimum frequency of optical rectification is assumed to be 6GHz D i e l e c t r i c T h ic k n e s s ( m ) 45 Vacuum radius 38µm Dielectric thickness 32µm

37 Bunch Acceleration in THz Waveguides 37/44 Electron bunch acceleration Cash-Karp Runge-Kutta method is used for efficient update of electron motion with time. Box-Muller method is used for generating a bunch of electrons with Gaussian distribution. We can not consider all the particles, so we use macro-particles. We consider the following initial condition: Mean initial energy = 1MeV Initial energy spread =.1% Initial bunch spread is a cube of 3µm 3µm 3µm

38 38/44 Bunch Acceleration in THz Waveguides Dispersion curve 1.5 / k F re q u e n c y (T H z ).8 1 M e a n b e a m e n e rg y (M e V ) Energy of a bunch (2mJ THz pulse) 6 1MeV to 1 MeV % energy spread.1. 5 w it h o u t s p a c e - c h a r g e w it h s p a c e - c h a r g e D is t a n c e ( m m ) w it h o u t s p a c e - c h a r g e w it h s p a c e - c h a r g e D is t a n c e ( m m ) 35 o Temperature of the coating C o a tin g T e m p r a tu r e ( C ) B e a m e n e r g y d e v ia tio n ( M e V ) Energy spread in a bunch 1 3 No melting of the coating D is t a n c e f r o m t h e W a v e g u id e E n t r a n c e ( c m )

39 39/44 Bunch Acceleration in THz Waveguides w it h o u t s p a c e - c h a r g e w it h s p a c e - c h a r g e D is t a n c e ( m m ) Electron is injected in a point within the pulse It is not possible practically A rule of thumb Practically achievable results are 1% lower than the theoretical optimum point. M e a n b e a m e n e rg y (M e V ) 1 Acceleration to 8.5MeV 1 w it h s p a c e - c h a r g e w it h o u t s p a c e - c h a r g e D is t a n c e ( m m ) 4 9% energy spread B e a m e n e r g y d e v ia tio n ( M e V ) M e a n b e a m e n e rg y (M e V ) Energy of a bunch (2mJ THz pulse).8 w it h s p a c e - c h a r g e w it h o u t s p a c e - c h a r g e D is t a n c e ( m m ) 4

40 Bunch Acceleration in THz Waveguides Without space-charge: unlimited With space-charge: limited What is the limit? We stop a macro-particle as soon as it hits the walls of the accelerator. 1 M e a n b e a m e n e rg y (M e V ) Amount of charge we can accelerate in the waveguide? 4/ p C b u n c h c h a rg e 1 6 p C b u n c h c h a rg e 1 6 p C b u n c h c h a rg e D is t a n c e ( m m ) 16pC is by far more than what we need.

41 41/44 Bunch Compression in THz waveguides Rectilinear Compression Fback Ffront Compression and deceleration Fback Ffront Maximum Compression Fback Ffront Compression and acceleration

42 42/44 Bunch Compression in THz waveguides 5 times bunch compression 1 w it h s p a c e - c h a r g e w it h o u t s p a c e - c h a r g e z ( m ) D is t a n c e ( m m ) 3 B e a m e n e r g y d e v ia tio n ( M e V ) Ø Mean initial energy = 1MeV Ø Initial energy spread =.1% Ø Initial bunch spread is a cube of 3mm 3mm 3mm Ø 2mJ 1 cycle THz pulse M e a n b e a m e n e rg y (M e V ) Acceleration to 3MeV 5 w it h s p a c e - c h a r g e w it h o u t s p a c e - c h a r g e D is t a n c e ( m m ) 3 7% energy spread.8 w it h s p a c e - c h a r g e w it h o u t s p a c e - c h a r g e D is t a n c e ( m m ) 3

43 43/44 Conclusion MoM and MoM/TL for diffraction analysis of planar metamaterials subdomain basis functions entire domain basis functions largely overlapping basis functions Energy coupling method for dispersion analysis Efficient procedures for the design of planar metamaterials PMoM is generalized for the simulation of periodic graphene metasurfaces: Arbitrary number of layers Arbitrary shapes for the unit cell configuration Full vectorial and arbitrary angles of incidence Simulation of a single cell of the periodic structure (Floquet) discretization of conductive layers only Both periodic and homogeneous substrates Non-diagonal conduc/vity for B and spatially-dispersive conductivity Metal-graphene hybrid layers are recently implemented Compact size accelerators based on THz acceleration THz waveguides for bunch acceleration THz waveguides for bunch compression

44 44/44 Acknowledgements ETHZ EPFL DESY Thank you for your attention

Graphene nanophotonics methods and devices: what can we learn from the microwave field?

Graphene nanophotonics methods and devices: what can we learn from the microwave field? Graphene nanophotonics methods and devices: what can we learn from the microwave field? J. Perruisseau Carrier J. S. Gomez Diaz, M. Tamagnone, E. Carrasco, C. Moldovan, M. Esquius, P. Sharma, J. R. Mosig,

More information

THz Electron Gun Development. Emilio Nanni 3/30/2016

THz Electron Gun Development. Emilio Nanni 3/30/2016 THz Electron Gun Development Emilio Nanni 3/30/2016 Outline Motivation Experimental Demonstration of THz Acceleration THz Generation Accelerating Structure and Results Moving Forward Parametric THz Amplifiers

More information

Arbitrary Patterning Techniques for Anisotropic Surfaces, and Line Waves

Arbitrary Patterning Techniques for Anisotropic Surfaces, and Line Waves Arbitrary Patterning Techniques for Anisotropic Surfaces, and Line Waves Dan Sievenpiper, Jiyeon Lee, and Dia a Bisharat January 11, 2016 1 Outline Arbitrary Anisotropic Surface Patterning Surface wave

More information

Light Manipulation by Metamaterials

Light Manipulation by Metamaterials Light Manipulation by Metamaterials W. J. Sun, S. Y. Xiao, Q. He*, L. Zhou Physics Department, Fudan University, Shanghai 200433, China *Speaker: qionghe@fudan.edu.cn 2011/2/19 Outline Background of metamaterials

More information

Time Domain Modeling of All-Optical Switch based on PT-Symmetric Bragg Grating

Time Domain Modeling of All-Optical Switch based on PT-Symmetric Bragg Grating Time Domain Modeling of All-Optical Switch based on PT-Symmetric Bragg Grating Sendy Phang 1, Ana Vukovic 1, Hadi Susanto 2, Trevor M. Benson 1, and Phillip Sewell 1 1 School of Electrical and Electronic

More information

Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs)

Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs) Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Title: Design of Graphene-based Nano-antennas for Terahertz Band Communication Date Submitted: 12 November, 2012 Source:

More information

ANALYTICAL MODEL OF A METASURFACE CONSIST- ING OF A REGULAR ARRAY OF SUB-WAVELENGTH CIRCULAR HOLES IN A METAL SHEET

ANALYTICAL MODEL OF A METASURFACE CONSIST- ING OF A REGULAR ARRAY OF SUB-WAVELENGTH CIRCULAR HOLES IN A METAL SHEET Progress In Electromagnetics Research M, Vol. 18, 209 219, 2011 ANALYTICAL MODEL OF A METASURFACE CONSIST- ING OF A REGULAR ARRAY OF SUB-WAVELENGTH CIRCULAR HOLES IN A METAL SHEET D. Ramaccia *, F. Bilotti,

More information

A Novel Design of Photonic Crystal Lens Based on Negative Refractive Index

A Novel Design of Photonic Crystal Lens Based on Negative Refractive Index PIERS ONLINE, VOL. 4, NO. 2, 2008 296 A Novel Design of Photonic Crystal Lens Based on Negative Refractive Index S. Haxha 1 and F. AbdelMalek 2 1 Photonics Group, Department of Electronics, University

More information

Cloaking The Road to Realization

Cloaking The Road to Realization Cloaking The Road to Realization by Reuven Shavit Electrical and Computer Engineering Department Ben-Gurion University of the Negev 1 Outline Introduction Transformation Optics Laplace s Equation- Transformation

More information

Design and Analysis of Reconfigurable Frequency Selective Surfaces using FDTD

Design and Analysis of Reconfigurable Frequency Selective Surfaces using FDTD The University of Mississippi Center of Applied Electromagnetic Systems Research (CAESR) Design and Analysis of Reconfigurable Frequency Selective Surfaces using FDTD Khaled ElMahgoub, Fan Yang and Atef

More information

Dielectric Accelerators at CLARA. G. Burt, Lancaster University On behalf of ASTeC, Lancaster U., Liverpool U., U. Manchester, and Oxford U.

Dielectric Accelerators at CLARA. G. Burt, Lancaster University On behalf of ASTeC, Lancaster U., Liverpool U., U. Manchester, and Oxford U. Dielectric Accelerators at CLARA G. Burt, Lancaster University On behalf of ASTeC, Lancaster U., Liverpool U., U. Manchester, and Oxford U. Dielectric Accelerators Types Photonic structures Dielectric

More information

Design and Characterization of a Dual-Band Metamaterial Absorber Based on Destructive Interferences

Design and Characterization of a Dual-Band Metamaterial Absorber Based on Destructive Interferences Progress In Electromagnetics Research C, Vol. 47, 95, 24 Design and Characterization of a Dual-Band Metamaterial Absorber Based on Destructive Interferences Saeid Jamilan, *, Mohammad N. Azarmanesh, and

More information

Full Wave Analysis of RF Signal Attenuation in a Lossy Rough Surface Cave Using a High Order Time Domain Vector Finite Element Method

Full Wave Analysis of RF Signal Attenuation in a Lossy Rough Surface Cave Using a High Order Time Domain Vector Finite Element Method Progress In Electromagnetics Research Symposium 2006, Cambridge, USA, March 26-29 425 Full Wave Analysis of RF Signal Attenuation in a Lossy Rough Surface Cave Using a High Order Time Domain Vector Finite

More information

A tutorial on meta-materials and THz technology

A tutorial on meta-materials and THz technology p.1/49 A tutorial on meta-materials and THz technology Thomas Feurer thomas.feurer@iap.unibe.ch Institute of Applied Physics Sidlerstr. 5, 3012 Bern Switzerland p.2/49 Outline Meta-materials Super-lenses

More information

New Aspects of Old Equations: Metamaterials and Beyond (Part 2) 신종화 KAIST 물리학과

New Aspects of Old Equations: Metamaterials and Beyond (Part 2) 신종화 KAIST 물리학과 New Aspects of Old Equations: Metamaterials and Beyond (Part 2) 신종화 KAIST 물리학과 Metamaterial Near field Configuration in Periodic Structures New Material Material and Metamaterial Material Metamaterial

More information

Electromagnetic Theory for Microwaves and Optoelectronics

Electromagnetic Theory for Microwaves and Optoelectronics Keqian Zhang Dejie Li Electromagnetic Theory for Microwaves and Optoelectronics Second Edition With 280 Figures and 13 Tables 4u Springer Basic Electromagnetic Theory 1 1.1 Maxwell's Equations 1 1.1.1

More information

USAGE OF NUMERICAL METHODS FOR ELECTROMAGNETIC SHIELDS OPTIMIZATION

USAGE OF NUMERICAL METHODS FOR ELECTROMAGNETIC SHIELDS OPTIMIZATION October 4-6, 2007 - Chiinu, Rep.Moldova USAGE OF NUMERICAL METHODS FOR ELECTROMAGNETIC SHIELDS OPTIMIZATION Ionu- P. NICA, Valeriu Gh. DAVID, /tefan URSACHE Gh. Asachi Technical University Iai, Faculty

More information

Alternative approaches to electromagnetic cloaking and invisibility

Alternative approaches to electromagnetic cloaking and invisibility Helsinki University of Technology SMARAD Centre of Excellence Radio Laboratory Alternative approaches to electromagnetic cloaking and invisibility Sergei Tretyakov and colleagues December 2007 What is

More information

Simulations of the IR/THz Options at PITZ (High-gain FEL and CTR)

Simulations of the IR/THz Options at PITZ (High-gain FEL and CTR) Case Study of IR/THz source for Pump-Probe Experiment at the European XFEL Simulations of the IR/THz Options at PITZ (High-gain FEL and CTR) Introduction Outline Simulations of High-gain FEL (SASE) Simulation

More information

Study of a THz IFEL prebuncher for laser-plasma accelerators

Study of a THz IFEL prebuncher for laser-plasma accelerators Study of a THz IFEL prebuncher for laser-plasma accelerators C. Sung 1, S. Ya. Tochitsky 1, P. Musumeci, J. Ralph 1, J. B. Rosenzweig, C. Pellegrini, and C. Joshi 1 Neptune Laboratory, 1 Department of

More information

Nonlinear Electrodynamics and Optics of Graphene

Nonlinear Electrodynamics and Optics of Graphene Nonlinear Electrodynamics and Optics of Graphene S. A. Mikhailov and N. A. Savostianova University of Augsburg, Institute of Physics, Universitätsstr. 1, 86159 Augsburg, Germany E-mail: sergey.mikhailov@physik.uni-augsburg.de

More information

Eigenvalue Analysis of Waveguides and Planar Transmission Lines Loaded with Full Tensor Anisotropic Materials

Eigenvalue Analysis of Waveguides and Planar Transmission Lines Loaded with Full Tensor Anisotropic Materials PIERS ONLINE, VOL. 5, NO. 5, 2009 471 Eigenvalue Analysis of Waveguides and Planar Transmission Lines Loaded with Full Tensor Anisotropic Materials C. S. Lavranos, D. G. Drogoudis, and G. A. Kyriacou Department

More information

Optics and Optical Design. Chapter 5: Electromagnetic Optics. Lectures 9 & 10

Optics and Optical Design. Chapter 5: Electromagnetic Optics. Lectures 9 & 10 Optics and Optical Design Chapter 5: Electromagnetic Optics Lectures 9 & 1 Cord Arnold / Anne L Huillier Electromagnetic waves in dielectric media EM optics compared to simpler theories Electromagnetic

More information

Design of a Non-uniform High Impedance Surface for a Low Profile Antenna

Design of a Non-uniform High Impedance Surface for a Low Profile Antenna 352 Progress In Electromagnetics Research Symposium 2006, Cambridge, USA, March 26-29 Design of a Non-uniform High Impedance Surface for a Low Profile Antenna M. Hosseini 2, A. Pirhadi 1,2, and M. Hakkak

More information

Cloaking of Dielectric and Metallic Elliptical Cylinders with a Nanostructured Graphene Metasurface

Cloaking of Dielectric and Metallic Elliptical Cylinders with a Nanostructured Graphene Metasurface Cloaking of Dielectric and Metallic Elliptical Cylinders with a Nanostructured Graphene Metasurface Hossein M. Bernety and Alexander B. Yakovlev Center for Applied Electromagnetic Systems Research (CAESR)

More information

FINITE-DIFFERENCE FREQUENCY-DOMAIN ANALYSIS OF NOVEL PHOTONIC

FINITE-DIFFERENCE FREQUENCY-DOMAIN ANALYSIS OF NOVEL PHOTONIC FINITE-DIFFERENCE FREQUENCY-DOMAIN ANALYSIS OF NOVEL PHOTONIC WAVEGUIDES Chin-ping Yu (1) and Hung-chun Chang (2) (1) Graduate Institute of Electro-Optical Engineering, National Taiwan University, Taipei,

More information

EPSILON-NEAR-ZERO (ENZ) AND MU-NEAR-ZERO (MNZ) MATERIALS

EPSILON-NEAR-ZERO (ENZ) AND MU-NEAR-ZERO (MNZ) MATERIALS EPSILON-NEAR-ZERO (ENZ) AND MU-NEAR-ZERO (MNZ) MATERIALS SARAH NAHAR CHOWDHURY PURDUE UNIVERSITY 1 Basics Design ENZ Materials Lumped circuit elements Basics Decoupling Direction emission Tunneling Basics

More information

3D PRINTING OF ANISOTROPIC METAMATERIALS

3D PRINTING OF ANISOTROPIC METAMATERIALS Progress In Electromagnetics Research Letters, Vol. 34, 75 82, 2012 3D PRINTING OF ANISOTROPIC METAMATERIALS C. R. Garcia 1, J. Correa 1, D. Espalin 2, J. H. Barton 1, R. C. Rumpf 1, *, R. Wicker 2, and

More information

Electromagnetic Shielding

Electromagnetic Shielding Electromagnetic Shielding SALVATORE CELOZZI RODOLFO ARANEO GIAMPIERO LOVAT Electrical Engineering Department "La Sapienza" University Rome, Italy IEEE Press iwiley- 'INTERSCIENCE A JOHN WILEY & SONS, INC.,

More information

Wavelength Dependent Microwave Devices Based on Metamaterial Technology. Professor Bal Virdee BSc(Eng) PhD CEng FIET

Wavelength Dependent Microwave Devices Based on Metamaterial Technology. Professor Bal Virdee BSc(Eng) PhD CEng FIET Wavelength Dependent Microwave Devices Based on Metamaterial Technology by Professor Bal Virdee BSc(Eng) PhD CEng FIET EM response of materials are determined by the spatial distribution of its atoms and

More information

Superconductivity Induced Transparency

Superconductivity Induced Transparency Superconductivity Induced Transparency Coskun Kocabas In this paper I will discuss the effect of the superconducting phase transition on the optical properties of the superconductors. Firstly I will give

More information

Graphene for THz technology

Graphene for THz technology Graphene for THz technology J. Mangeney1, J. Maysonnave1, S. Huppert1, F. Wang1, S. Maero1, C. Berger2,3, W. de Heer2, T.B. Norris4, L.A. De Vaulchier1, S. Dhillon1, J. Tignon1 and R. Ferreira1 1 Laboratoire

More information

REALIZATION OF A MATCHING REGION BETWEEN A RADOME AND A GROUND PLANE

REALIZATION OF A MATCHING REGION BETWEEN A RADOME AND A GROUND PLANE Progress In Electromagnetics Research Letters, Vol. 17, 1 1, 21 REALIZATION OF A MATCHING REGION BETWEEN A RADOME AND A GROUND PLANE D. Sjöberg and M. Gustafsson Department of Electrical and Information

More information

3-1-2 GaSb Quantum Cascade Laser

3-1-2 GaSb Quantum Cascade Laser 3-1-2 GaSb Quantum Cascade Laser A terahertz quantum cascade laser (THz-QCL) using a resonant longitudinal optical (LO) phonon depopulation scheme was successfully demonstrated from a GaSb/AlSb material

More information

Research Article Trapped-Mode Resonance Regime of Thin Microwave Electromagnetic Arrays with Two Concentric Rings in Unit Cell

Research Article Trapped-Mode Resonance Regime of Thin Microwave Electromagnetic Arrays with Two Concentric Rings in Unit Cell Microwave Science and Technology Volume 2, Article ID 3688, 6 pages doi:.55/2/3688 Research Article Trapped-Mode Resonance Regime of Thin Microwave Electromagnetic Arrays with Two Concentric Rings in Unit

More information

Graphene A One-Atom-Thick Material for Microwave Devices

Graphene A One-Atom-Thick Material for Microwave Devices ROMANIAN JOURNAL OF INFORMATION SCIENCE AND TECHNOLOGY Volume 11, Number 1, 2008, 29 35 Graphene A One-Atom-Thick Material for Microwave Devices D. DRAGOMAN 1, M. DRAGOMAN 2, A. A. MÜLLER3 1 University

More information

Step index planar waveguide

Step index planar waveguide N. Dubreuil S. Lebrun Exam without document Pocket calculator permitted Duration of the exam: 2 hours The exam takes the form of a multiple choice test. Annexes are given at the end of the text. **********************************************************************************

More information

Progress In Electromagnetics Research, PIER 35, , 2002

Progress In Electromagnetics Research, PIER 35, , 2002 Progress In Electromagnetics Research, PIER 35, 315 334, 2002 NUMERICAL STUDIES OF LEFT HANDED METAMATERIALS C. D. Moss, T. M. Grzegorczyk, Y. Zhang, and J. A. Kong Research Laboratory of Electronics Massachusetts

More information

4 FEL Physics. Technical Synopsis

4 FEL Physics. Technical Synopsis 4 FEL Physics Technical Synopsis This chapter presents an introduction to the Free Electron Laser (FEL) physics and the general requirements on the electron beam parameters in order to support FEL lasing

More information

Experimental Optimization of Electron Beams for Generating THz CTR and CDR with PITZ

Experimental Optimization of Electron Beams for Generating THz CTR and CDR with PITZ Experimental Optimization of Electron Beams for Generating THz CTR and CDR with PITZ Introduction Outline Optimization of Electron Beams Calculations of CTR/CDR Pulse Energy Summary & Outlook Prach Boonpornprasert

More information

CERN Accelerator School Wakefields. Prof. Dr. Ursula van Rienen, Franziska Reimann University of Rostock

CERN Accelerator School Wakefields. Prof. Dr. Ursula van Rienen, Franziska Reimann University of Rostock CERN Accelerator School Wakefields Prof. Dr. Ursula van Rienen, Franziska Reimann University of Rostock Contents The Term Wakefield and Some First Examples Basic Concept of Wakefields Basic Definitions

More information

APPLICATION OF BILAYER ANISOTROPIC STRUC- TURES FOR DESIGNING LOW-PASS FILTERS AND PO- LARIZERS

APPLICATION OF BILAYER ANISOTROPIC STRUC- TURES FOR DESIGNING LOW-PASS FILTERS AND PO- LARIZERS Progress In Electromagnetics Research M, Vol. 29, 95 108, 2013 APPLICATION OF BILAYER ANISOTROPIC STRUC- TURES FOR DESIGNING LOW-PASS FILTERS AND PO- LARIZERS Amir Raeesi *, Ali Abdolali, and Hossein Mirzaei

More information

Module 1 Introduction

Module 1 Introduction Pioneering 21 st Century Electromagnetics and Photonics Module 1 Introduction Course Website: http://emlab.utep.edu/scsvl.htm EM Lab Website: http://emlab.utep.edu/ Outline Module 1 Introduction What is

More information

Progress In Electromagnetics Research Letters, Vol. 17, , 2010

Progress In Electromagnetics Research Letters, Vol. 17, , 2010 Progress In Electromagnetics Research Letters, Vol. 17, 163 170, 2010 MINIATURE ELECTROMAGNETIC BAND-GAP STRUCTURE USING SPIRAL GROUND PLANE H.-H. Xie, Y.-C. Jiao, K. Song, and B. Yang National Key Laboratory

More information

COMBINER RING LATTICE

COMBINER RING LATTICE CTFF3 TECHNICAL NOTE INFN - LNF, Accelerator Division Frascati, April 4, 21 Note: CTFF3-2 COMBINER RING LATTICE C. Biscari 1. Introduction The 3 rd CLIC test facility, CTF3, is foreseen to check the feasibility

More information

Engineering Electromagnetics

Engineering Electromagnetics Nathan Ida Engineering Electromagnetics With 821 Illustrations Springer Contents Preface vu Vector Algebra 1 1.1 Introduction 1 1.2 Scalars and Vectors 2 1.3 Products of Vectors 13 1.4 Definition of Fields

More information

Left-handed materials: Transfer matrix method studies

Left-handed materials: Transfer matrix method studies Left-handed materials: Transfer matrix method studies Peter Markos and C. M. Soukoulis Outline of Talk What are Metamaterials? An Example: Left-handed Materials Results of the transfer matrix method Negative

More information

phase retardance THz intensity ratio THz filling factor in air : 0.2 filling factor in si : 0.8 length of air : 4um length of si : 16um depth : 27.

phase retardance THz intensity ratio THz filling factor in air : 0.2 filling factor in si : 0.8 length of air : 4um length of si : 16um depth : 27. 3. Research on THz-wave applications using frequency-agile THz-wave source 3.1 Development of spectroscopic Stokes polarimeter by using tunable THz-wave source (T. Notake, H. Minamide) In THz frequency

More information

Nanoscale optical circuits: controlling light using localized surface plasmon resonances

Nanoscale optical circuits: controlling light using localized surface plasmon resonances Nanoscale optical circuits: controlling light using localized surface plasmon resonances T. J. Davis, D. E. Gómez and K. C. Vernon CSIRO Materials Science and Engineering Localized surface plasmon (LSP)

More information

Oscillateur paramétrique optique en

Oscillateur paramétrique optique en C. Ozanam 1, X. Lafosse 2, I. Favero 1, S. Ducci 1, G. Leo 1 1 Université Paris Diderot, Sorbonne Paris Cité, Laboratoire MPQ, CNRS-UMR 7162, Paris, France, 2 Laboratoire de Photonique et Nanostructures,

More information

Coding Metamaterials, Digital Metamaterials and Programmable Metamaterials

Coding Metamaterials, Digital Metamaterials and Programmable Metamaterials Forum for Electromagnetic Research Methods and Application Technologies (FERMAT) Coding Metamaterials, Digital Metamaterials and Programmable Metamaterials by: Tie Jun Cui, Qiang Cheng, Xiang Wan (Email:

More information

Hiromitsu TOMIZAWA XFEL Division /SPring-8

Hiromitsu TOMIZAWA XFEL Division /SPring-8 TUPLB10 (Poster: TUPB080) Non-destructive Real-time Monitor to measure 3D- Bunch Charge Distribution with Arrival Timing to maximize 3D-overlapping for HHG-seeded EUV-FEL Hiromitsu TOMIZAWA XFEL Division

More information

Effects from the Thin Metallic Substrate Sandwiched in Planar Multilayer Microstrip Lines

Effects from the Thin Metallic Substrate Sandwiched in Planar Multilayer Microstrip Lines Progress In Electromagnetics Research Symposium 2006, Cambridge, USA, March 26-29 115 Effects from the Thin Metallic Substrate Sandwiched in Planar Multilayer Microstrip Lines L. Zhang and J. M. Song Iowa

More information

Gradient-index metamaterials and spoof surface plasmonic waveguide

Gradient-index metamaterials and spoof surface plasmonic waveguide Gradient-index metamaterials and spoof surface plasmonic waveguide Hui Feng Ma State Key Laboratory of Millimeter Waves Southeast University, Nanjing 210096, China City University of Hong Kong, 11 October

More information

Photonics Beyond Diffraction Limit:

Photonics Beyond Diffraction Limit: Photonics Beyond Diffraction Limit: Plasmon Cavity, Waveguide and Lasers Xiang Zhang University of California, Berkeley Light-Matter Interaction: Electrons and Photons Photons Visible / IR ~ 1 m Electrons

More information

Periodic FDTD Characterization of Guiding and Radiation Properties of Negative Refractive Index Transmission Line Metamaterials

Periodic FDTD Characterization of Guiding and Radiation Properties of Negative Refractive Index Transmission Line Metamaterials Periodic FDTD Characterization of Guiding and Radiation Properties of Negative Refractive Index Transmission Line Metamaterials Costas D. Sarris The Edward S. Rogers Sr. Department of Electrical and Computer

More information

Progress In Electromagnetics Research B, Vol. 1, , 2008

Progress In Electromagnetics Research B, Vol. 1, , 2008 Progress In Electromagnetics Research B Vol. 1 09 18 008 DIFFRACTION EFFICIENCY ENHANCEMENT OF GUIDED OPTICAL WAVES BY MAGNETOSTATIC FORWARD VOLUME WAVES IN THE YTTRIUM-IRON-GARNET WAVEGUIDE COATED WITH

More information

Optics, Light and Lasers

Optics, Light and Lasers Dieter Meschede Optics, Light and Lasers The Practical Approach to Modern Aspects of Photonics and Laser Physics Second, Revised and Enlarged Edition BICENTENNIAL.... n 4 '':- t' 1 8 0 7 $W1LEY 2007 tri

More information

AREAL Test Facility for Advanced Accelerator and Radiation Sources Concepts

AREAL Test Facility for Advanced Accelerator and Radiation Sources Concepts 2 nd European Advanced Accelerator Concepts AREAL Test Facility for Advanced Accelerator and Radiation Sources Concepts V. Tsakanov CANDLE SRI 13-19 Sep 2015, La Biodola, Isola d'elba Introduction 2nd

More information

External Injection in Plasma Accelerators. R. Pompili, S. Li, F. Massimo, L. Volta, J. Yang

External Injection in Plasma Accelerators. R. Pompili, S. Li, F. Massimo, L. Volta, J. Yang External Injection in Plasma Accelerators R. Pompili, S. Li, F. Massimo, L. Volta, J. Yang Why Plasma Accelerators? Conventional RF cavities: 50-100 MV/m due to electrical breakdown Plasma: E>100 GV/m

More information

Progress In Electromagnetics Research, PIER 97, , 2009

Progress In Electromagnetics Research, PIER 97, , 2009 Progress In Electromagnetics Research, PIER 97, 407 416, 2009 PRACTICAL LIMITATIONS OF AN INVISIBILITY CLOAK B. L. Zhang Research Laboratory of Electronics Massachusetts Institute of Technology MA 02139,

More information

Technique for the electric and magnetic parameter measurement of powdered materials

Technique for the electric and magnetic parameter measurement of powdered materials Computational Methods and Experimental Measurements XIV 41 Technique for the electric and magnetic parameter measurement of powdered materials R. Kubacki,. Nowosielski & R. Przesmycki Faculty of Electronics,

More information

arxiv: v2 [cond-mat.other] 20 Nov 2008

arxiv: v2 [cond-mat.other] 20 Nov 2008 arxiv:8.2666v2 [cond-mat.other] 2 Nov 28 Subwavelength internal imaging by means of the wire medium Yan Zhao, Pavel Belov and Yang Hao School of Electronic Engineering and Computer Science, Queen Mary,

More information

ANALYSIS OF AN INJECTION-LOCKED BISTABLE SEMICONDUCTOR LASER WITH THE FREQUENCY CHIRPING

ANALYSIS OF AN INJECTION-LOCKED BISTABLE SEMICONDUCTOR LASER WITH THE FREQUENCY CHIRPING Progress In Electromagnetics Research C, Vol. 8, 121 133, 2009 ANALYSIS OF AN INJECTION-LOCKED BISTABLE SEMICONDUCTOR LASER WITH THE FREQUENCY CHIRPING M. Aleshams Department of Electrical and Computer

More information

Research on the Wide-angle and Broadband 2D Photonic Crystal Polarization Splitter

Research on the Wide-angle and Broadband 2D Photonic Crystal Polarization Splitter Progress In Electromagnetics Research Symposium 2005, Hangzhou, China, August 22-26 551 Research on the Wide-angle and Broadband 2D Photonic Crystal Polarization Splitter Y. Y. Li, P. F. Gu, M. Y. Li,

More information

Broadband Subwavelength Imaging with a Wire Medium Slab Loaded with Graphene Sheets

Broadband Subwavelength Imaging with a Wire Medium Slab Loaded with Graphene Sheets Broadband Subwavelength Imaging with a Wire Medium Slab Loaded with Graphene Sheets Ali Forouzmand and Alexander B. Yakovlev Center for Applied Electromagnetic Systems Research (CAESR) Department of Electrical

More information

Ultra-Broad Band Radar Cross Section Reduction of Waveguide Slot Antenna with Metamaterials

Ultra-Broad Band Radar Cross Section Reduction of Waveguide Slot Antenna with Metamaterials RADIOENGINEERING, VOL. 25, NO. 2, JUNE 216 241 Ultra-Broad Band Radar Cross Section Reduction of Waveguide Slot Antenna with Metamaterials Qiang FU 1, Cheng-Li FAN 1, Si-Jia LI 2, Gang WANG 1, Xiang-Yu

More information

Workshop on New Materials for Renewable Energy

Workshop on New Materials for Renewable Energy 2286-6 Workshop on New Materials for Renewable Energy 31 October - 11 November 201 Metamaterials: Past, Present, and Future Nonlinear Physics Centre Research School of Physics and Engineering The Australian

More information

High Directivity Horn Antenna of Metamaterial in Terahertz Xiangjin Quan, Shiquan Zhang, Hui Li

High Directivity Horn Antenna of Metamaterial in Terahertz Xiangjin Quan, Shiquan Zhang, Hui Li International Power, Electronics and Materials Engineering Conference (IPEMEC 215) High Directivity Horn Antenna of Metamaterial in Terahertz Xiangjin Quan, Shiquan Zhang, Hui Li Engineering University

More information

Study of Propagating Modes and Reflectivity in Bragg Filters with AlxGa1-xN/GaN Material Composition

Study of Propagating Modes and Reflectivity in Bragg Filters with AlxGa1-xN/GaN Material Composition Study of Propagating Modes and Reflectivity in Bragg Filters with AlxGa1-xN/GaN Material Composition Sourangsu Banerji Department of Electronics & Communication Engineering, RCC Institute of Information

More information

Study on Bose-Einstein Condensation of Positronium

Study on Bose-Einstein Condensation of Positronium Study on Bose-Einstein Condensation of Positronium K. Shu 1, T. Murayoshi 1, X. Fan 1, A. Ishida 1, T. Yamazaki 1,T. Namba 1,S. Asai 1, K. Yoshioka 2, M. Kuwata-Gonokami 1, N. Oshima 3, B. E. O Rourke

More information

Physical substantiation of Huygens principle and the reciprocity theorem

Physical substantiation of Huygens principle and the reciprocity theorem Physical substantiation of Huygens principle and the reciprocity theorem F. F. Mende http://fmnauka.narod.ru/works.html mende_fedor@mail.ru Abstract Huygens principle is the basic postulate of geometric

More information

EFFICIENT SIMULATIONS OF PERIODIC STRUC- TURES WITH OBLIQUE INCIDENCE USING DIRECT SPECTRAL FDTD METHOD

EFFICIENT SIMULATIONS OF PERIODIC STRUC- TURES WITH OBLIQUE INCIDENCE USING DIRECT SPECTRAL FDTD METHOD Progress In Electromagnetics Research M, Vol. 17, 101 111, 2011 EFFICIENT SIMULATIONS OF PERIODIC STRUC- TURES WITH OBLIQUE INCIDENCE USING DIRECT SPECTRAL FDTD METHOD Y. J. Zhou, X. Y. Zhou, and T. J.

More information

The Nature of Accelerating Modes in PBG Fibers

The Nature of Accelerating Modes in PBG Fibers SLAC-PUB-14029 The Nature of Accelerating Modes in PBG Fibers Robert J. Noble SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025 USA Abstract. Transverse magnetic (TM) modes

More information

Modelling and design of complete photonic band gaps in two-dimensional photonic crystals

Modelling and design of complete photonic band gaps in two-dimensional photonic crystals PRAMANA c Indian Academy of Sciences Vol. 70, No. 1 journal of January 2008 physics pp. 153 161 Modelling and design of complete photonic band gaps in two-dimensional photonic crystals YOGITA KALRA and

More information

Optical Self-Organization in Semiconductor Lasers Spatio-temporal Dynamics for All-Optical Processing

Optical Self-Organization in Semiconductor Lasers Spatio-temporal Dynamics for All-Optical Processing Optical Self-Organization in Semiconductor Lasers Spatio-temporal Dynamics for All-Optical Processing Self-Organization for all-optical processing What is at stake? Cavity solitons have a double concern

More information

Plasmonic metamaterial cloaking at optical frequencies

Plasmonic metamaterial cloaking at optical frequencies Plasmonic metamaterial cloaking at optical frequencies F. Bilotti *, S. Tricarico, and L. Vegni Department of Applied Electronics, University Roma Tre Via della Vasca Navale 84, Rome 146, ITALY * Corresponding

More information

A Broadband Flexible Metamaterial Absorber Based on Double Resonance

A Broadband Flexible Metamaterial Absorber Based on Double Resonance Progress In Electromagnetics Research Letters, Vol. 46, 73 78, 2014 A Broadband Flexible Metamaterial Absorber Based on Double Resonance ong-min Lee* Abstract We present a broadband microwave metamaterial

More information

Nonlinear Metamaterial Composite Structure with Tunable Tunneling Frequency

Nonlinear Metamaterial Composite Structure with Tunable Tunneling Frequency Progress In Electromagnetics Research Letters, Vol. 71, 91 96, 2017 Nonlinear Metamaterial Composite Structure with Tunable Tunneling Frequency Tuanhui Feng *,HongpeiHan,LiminWang,andFeiYang Abstract A

More information

Sub-wavelength electromagnetic structures

Sub-wavelength electromagnetic structures Sub-wavelength electromagnetic structures Shanhui Fan, Z. Ruan, L. Verselegers, P. Catrysse, Z. Yu, J. Shin, J. T. Shen, G. Veronis Ginzton Laboratory, Stanford University http://www.stanford.edu/group/fan

More information

LASERS. Amplifiers: Broad-band communications (avoid down-conversion)

LASERS. Amplifiers: Broad-band communications (avoid down-conversion) L- LASERS Representative applications: Amplifiers: Broad-band communications (avoid down-conversion) Oscillators: Blasting: Energy States: Hydrogen atom Frequency/distance reference, local oscillators,

More information

Micro- and Nano-Technology... for Optics

Micro- and Nano-Technology... for Optics Micro- and Nano-Technology...... for Optics U.D. Zeitner Fraunhofer Institut für Angewandte Optik und Feinmechanik Jena Today: 1. Introduction E. Bernhard Kley Institute of Applied Physics Friedrich-Schiller

More information

Nonlinear effects and pulse propagation in PCFs

Nonlinear effects and pulse propagation in PCFs Nonlinear effects and pulse propagation in PCFs --Examples of nonlinear effects in small glass core photonic crystal fibers --Physics of nonlinear effects in fibers --Theoretical framework --Solitons and

More information

Chiroptical Spectroscopy

Chiroptical Spectroscopy Chiroptical Spectroscopy Theory and Applications in Organic Chemistry Lecture 2: Polarized light Masters Level Class (181 041) Mondays, 8.15-9.45 am, NC 02/99 Wednesdays, 10.15-11.45 am, NC 02/99 28 Electromagnetic

More information

Mat. Res. Soc. Symp. Proc. Vol Materials Research Society K5.6

Mat. Res. Soc. Symp. Proc. Vol Materials Research Society K5.6 Mat. Res. Soc. Symp. Proc. Vol. 692 2002 Materials Research Society K5.6 Simulations of Realizable Photonic Bandgap Structures with High Refractive Contrast ABSTRACT Bonnie Gersten and Jennifer Synowczynski

More information

Metamaterials & Plasmonics

Metamaterials & Plasmonics Metamaterials & Plasmonics Exploring the Impact of Rotating Rectangular Plasmonic Nano-hole Arrays on the Transmission Spectra and its Application as a Plasmonic Sensor. Abstract Plasmonic nano-structures

More information

Introduction to Photonic Crystals

Introduction to Photonic Crystals 1 Introduction to Photonic Crystals Summary. Chapter 1 gives a brief introduction into the basics of photonic crystals which are a special class of optical media with periodic modulation of permittivity.

More information

A COMPACT POLARIZATION BEAM SPLITTER BASED ON A MULTIMODE PHOTONIC CRYSTAL WAVEGUIDE WITH AN INTERNAL PHOTONIC CRYSTAL SECTION

A COMPACT POLARIZATION BEAM SPLITTER BASED ON A MULTIMODE PHOTONIC CRYSTAL WAVEGUIDE WITH AN INTERNAL PHOTONIC CRYSTAL SECTION Progress In Electromagnetics Research, PIER 103, 393 401, 2010 A COMPACT POLARIZATION BEAM SPLITTER BASED ON A MULTIMODE PHOTONIC CRYSTAL WAVEGUIDE WITH AN INTERNAL PHOTONIC CRYSTAL SECTION Y. C. Shi Centre

More information

Jitter measurement by electro-optical sampling

Jitter measurement by electro-optical sampling Jitter measurement by electro-optical sampling VUV-FEL at DESY - Armin Azima S. Duesterer, J. Feldhaus, H. Schlarb, H. Redlin, B. Steffen, DESY Hamburg K. Sengstock, Uni Hamburg Adrian Cavalieri, David

More information

Angular and polarization properties of a photonic crystal slab mirror

Angular and polarization properties of a photonic crystal slab mirror Angular and polarization properties of a photonic crystal slab mirror Virginie Lousse 1,2, Wonjoo Suh 1, Onur Kilic 1, Sora Kim 1, Olav Solgaard 1, and Shanhui Fan 1 1 Department of Electrical Engineering,

More information

Towards optical left-handed metamaterials

Towards optical left-handed metamaterials FORTH Tomorrow: Modelling approaches for metamaterials Towards optical left-handed metamaterials M. Kafesaki, R. Penciu, Th. Koschny, P. Tassin, E. N. Economou and C. M. Soukoulis Foundation for Research

More information

5 RCS Management of Edge Diffracted Waves

5 RCS Management of Edge Diffracted Waves 5 RCS Management of Edge Diffracted Waves 5.1 Introduction Radar absorbing materials (RAM s) applied as a coating on the surface of an object, partially transform the energy of an incident radar beam into

More information

Application of Computational Fluid Dynamics (CFD) Based Technology to Computational Electromagnetics Ramesh K. Agarwal

Application of Computational Fluid Dynamics (CFD) Based Technology to Computational Electromagnetics Ramesh K. Agarwal Application of Computational Fluid Dynamics (CFD) Based Technology to Computational Electromagnetics Ramesh K. Agarwal IEEE Distinguished Lecturer The William Palm Professor of Engineering Washington University

More information

STUDY ON THE PROPERTIES OF SURFACE WAVES IN COATED RAM LAYERS AND MONO-STATIC RCSR PERFORMANCES OF A COATED SLAB

STUDY ON THE PROPERTIES OF SURFACE WAVES IN COATED RAM LAYERS AND MONO-STATIC RCSR PERFORMANCES OF A COATED SLAB Progress In Electromagnetics Research M, Vol. 11, 13 13, 1 STUDY ON THE PROPERTIES OF SURFACE WAVES IN COATED RAM LAYERS AND MONO-STATIC RCSR PERFORMANCES OF A COATED SLAB H. Y. Chen, P. H. Zhou, L. Chen,

More information

Electromagnetic Absorption by Metamaterial Grating System

Electromagnetic Absorption by Metamaterial Grating System PIERS ONLINE, VOL. 4, NO. 1, 2008 91 Electromagnetic Absorption by Metamaterial Grating System Xiaobing Cai and Gengkai Hu School of Science, Beijing Institute of Technology, Beijing 100081, China Abstract

More information

Electromagnetic Wave Guidance Mechanisms in Photonic Crystal Fibers

Electromagnetic Wave Guidance Mechanisms in Photonic Crystal Fibers Electromagnetic Wave Guidance Mechanisms in Photonic Crystal Fibers Tushar Biswas 1, Shyamal K. Bhadra 1 1 Fiber optics and Photonics Division, CSIR-Central Glass and Ceramic Research Institute *196, Raja

More information

Potassium Titanyl Phosphate(KTiOPO 4, KTP)

Potassium Titanyl Phosphate(KTiOPO 4, KTP) Potassium Titanyl Phosphate(KTiOPO 4, KTP) Introduction Potassium Titanyl Phosphate (KTiOPO 4 or KTP) is widely used in both commercial and military lasers including laboratory and medical systems, range-finders,

More information

Simulations of the IR/THz source at PITZ (SASE FEL and CTR)

Simulations of the IR/THz source at PITZ (SASE FEL and CTR) Simulations of the IR/THz source at PITZ (SASE FEL and CTR) Introduction Outline Simulations of SASE FEL Simulations of CTR Summary Issues for Discussion Mini-Workshop on THz Option at PITZ DESY, Zeuthen

More information

Multiple extraordinary optical transmission peaks from evanescent coupling in perforated metal plates surrounded by dielectrics

Multiple extraordinary optical transmission peaks from evanescent coupling in perforated metal plates surrounded by dielectrics Multiple extraordinary optical transmission peaks from evanescent coupling in perforated metal plates surrounded by dielectrics R. Ortuño,* C. García-Meca, F. J. Rodríguez-Fortuño, J. Martí, and A. Martínez

More information

Enhancing and suppressing radiation with some permeability-near-zero structures

Enhancing and suppressing radiation with some permeability-near-zero structures Enhancing and suppressing radiation with some permeability-near-zero structures Yi Jin 1,2 and Sailing He 1,2,3,* 1 Centre for Optical and Electromagnetic Research, State Key Laboratory of Modern Optical

More information