Generation and Applications of High Harmonics
|
|
- Arron Woods
- 6 years ago
- Views:
Transcription
1 First Asian Summer School on Aug. 9, 2006 Generation and Applications of High Harmonics Chang Hee NAM Dept. of Physics & Coherent X-ray Research Center Korea Advanced Institute of Science and Technology
2 Contents 1. Basic physics of high harmonic generation - single atom response - propagation effects 2. Generation of strong harmonics - long gas jet - two-color laser field 3. Applications - soft x-ray interferometry - attosecond physics 4. Conclusion
3 High Harmonic Generation (HHG) r e m High harmonics h c S l o o t a i d m a u R S d spectrometer Soft X-ray n Gasijet n a n a s O t s A n o i t 1 a r Signal processor e l ce Ultrashort coherent soft c x-rays! A a m s a l P r e s La Intense fs laser X-ray filter electron s n io X-ray CCD Laser atom X-ray H H H H High-order harmonics (Å)
4 Typical spectral structure of high harmonics Plateau Cutoff Perturbative HG Characteristics ly odd harmonics Sharp dropping plateau cutoff Plateau structure: HHG is a nonperturbative process. Ar; τ=36 ps; Ι= 3x10 13 W/cm 2 Li et al., Phys. Rev. A 39, 5751 (1989) Atomic unit of intensity = 6x10 15 W/cm 2
5 1. Basic Physics of HHG Single atom response - semi-classical three-step model - electron paths of HHG - quantum mechanical models: TDSE and SFA Propagation effects - elements of propagation effect - full simulation of HHG
6 Semi-classical Three-step Model d(t) = - d(t+t/2) = d(t+t) due to inversion symmetry only odd harmonics Cutoff order ω = I + KEmax = I U, c p p p Corkum, Phys. Rev. Lett. 71, 1994 (1993) U p U p : ponderomotive potential
7 Electron Paths of HHG Ne; τ=30 fs; λ=820 nm; I=9x10 14 W/cm 2 ω = I + KEmax = I U c p p p
8 Quantum Mechanical Approach Schrödinger eq. 2 i Ψ (,) x t = + V() x + x E() t Ψ(,) x t t 2 Atomic dipole (or dipole acceleration) is the source of radiation. d() t = Ψ() t x Ψ() t 2 d da () t = Ψ() t x Ψ () t = Ψ() t V( x) + E() t Ψ() t 2 dt Ehrenfest s theorem ce atomic dipole is given, the harmonic field can be calculated. Harmonic field Harmonic spectrum Time-frequency analysis E I h h () t d () t a ( d t ) 2 ( ω ) FT ( ) in atomic unit (m e =ћ= e =1) Wigner distribution or short-time Fourier transform a
9 a Strong field approximation (SFA) model Assumptions: - Hydrogenlike atom with ground state only - ce the electron is ionized and in continuum state, it is driven solely by the intense laser field; the Coulomb field is neglected (strong field approximation). Calculation of dipole acceleration t ( ) ( ) Lewenstein et al., Phys. Rev. A 49, 2117 (1994) Becker et al., Phys. Rev. A 56, 645 (1997) * is ( p, t, t ) d () t = i dt d p da p+ A() t E( t ) d p+ A( t ) e + CC.. Recombination at t Ionization at t 1 t S( p, t, t ) = ( ( t )) 2 d t Ip ( t t ) 2 p+ A + t da( p) = p V( x) g, d( p) = p x g Traveling in continuum between t and t -> wavepacket diffusion Ionization can be incorporated by inserting the remaining probability amplitude calculated with ADK or PPT formula.
10 Elements of Propagation Effects Focusing space-dependent laser intensity phase distribution (Gouy phase) Ionization - space-time-dependent laser intensity and laser phase due to self-phase modulation (defocusing and chirp modulation). - depletion of neutral atoms 2 2 en( ) (, ) e x, t ωp x t Δ npl( x, t) = = 2 2 2ε m ω 2ω In experiments, these effects appear together. To incorporate these effects, a numerical simulation is performed. 0 e
11 Laser pulse propagation Full Simulation of HHG E1 ω1 2 E1 = (1 n ) eff E1 c t c n (,,) rzt = n(,,) rzt + nirzt (,,) ω (,,)/2 rzt ω eff p 1 Harmonic pulse propagation E ( r, z, t) P r z t c t t P( r, z, t) = [ N N ( r, z, t)] x( r, z, t) h (,, ) E h ( r, z, t) = μ e P( r, z, t) N e ( r, z, t) E1 ( r, z, t) Priori et. al., Phys. Rev A 61, (2000) Takahashi et al., Phys. Rev. A 68, (2004) Atomic response (SFA & ADK) 3/2 π isst (, t τ ) xt () = i dτ d( pst(, tτ) + At ()) e 0 ε + iτ /2 E( t τ) id( p( t, τ) + At ( τ)) at ( τ) at ( ) + cc.. E h N e st ( r, z, t) Ionization is calculated using ADK or PPT formula. ( r, z, t)
12 2. Generation of Strong Harmonics Long gas jet - long gas jet for strong HHG - plasma image and laser beam profile - Guiding and profile flattening - harmonic optimization Two-color laser field - experimental setup - dramatic signal enhancement - dependence on relative phase - electron paths in two-color field
13 f=1.2 m Long Gas Jet for Strong HHG 5 mj, -42 fs Filter CCD 1 9-mm gas nozzle z<0 z>0 z=0 Image relay CCD 2 Attenuator A long gas jet provides a long high-density gas medium with simple target alignment.
14 Plasma Image and Laser Beam Profile I 0 =2x10 15 W/cm 2 (at z=0), E=5 mj, τ=-42 fs, Ne (40 Torr), slit nozzle (L=9 mm) Plasma image (CCD1) Laser beam profile (CCD2) Entrance z=0 Exit L (mm) Entrance (z=0) (z=-18 mm) z=-18 mm Exit
15 Self-guiding and Profile-flattening I r z 0 ionizing medium z=0 z<0 z>0 r z k < r k = r k > r Radial wave vector k r z Medium at z < 0 Profile flattening k r >0 : diverging k r <0 : converging k r =0 : boundary of profile flattening Refractive index rapidly changes at k r =0 Creating waveguide Self-guiding of laser pulses
16 Intensity (10 14 W/cm 2 ) Intensity (10 14 W/cm 2 ) 3D Propagation Calculation I 0 =2x10 15 W/cm 2 (at z=0), E=5 mj, τ=-42 fs, Ne (40 Torr), slit nozzle (L=9 mm) When medium is at z=0 When medium is at z= -18 mm r (μm) L (mm) r (μm) L (mm) defocusing by plasma focusing by lens + defocusing by plasma = profile flattening 9
17 Harmonic Optimization in Space I 0 =2x10 15 W/cm 2 (at z=0), E=5 mj, τ=-42 fs, Ne (40 Torr), slit nozzle (L=9 mm) H61 Spatial distribution of harmonics Beam divergence: 0.5 mrad Wavelength (Å) Applying self-guided and profile-flattened laser pulses, bright harmonics with low beam divergence were obtained y (mm)
18 Harmonic Optimization in Time: Coherent Control I 0 =2x10 15 W/cm 2 (at z=0), E=5 mj, z=-18 mm, Ne (40 Torr), slit nozzle (L=9 mm) Intensity (arb. units) 0.07 nm Wavelength (Å ) Pulse duration (fs) Chirp control was performed with self-guided laser pulses.
19 Spatiotemporal optimization of HHG Coherent control of guided and profile-flattened laser pulses leads to strong harmonic generation. Spatially uniform laser beam focusing by lens + defocusing by plasma guiding and profile flattening Coherent control of harmonic generation SPM-induced positive laser chirp in the leading edge + negative harmonic chirp of short path components + chirp control of laser pulse compensation of harmonic chirp H. T. Kim et al., Phys. Rev. A 69, (R) (2004) Tosa et al., Phys. Rev. A 71, and (2005)
20 Strong harmonic generation in a Two-color Laser Field k y Atoms θ E 2ω x E ω New degrees of freedom - intensity - polarization - relative phase - time delay Use the new degrees of freedom to control HHG at microscopic level.
21 Two-color High Harmonic Generation Focusing mirror Wave plate 2ω 1ω 2ω 1ω BBO Wave plate Glass plate z < n1ω : Rotation angle (degree) z >0 n 2ω : for fused silica Relative phase (degree) (7.3, 360) Femtosecond laser 2.8 mj, 26fs Gas jet Glass plate Flat-field XUV spectrometer Al filter X-ray CCD I J. Kim et al., Phys. Rev. Lett. 94, (2005) (10.3, 720)
22 Dramatic Signal Enhancement He (ρ=950 torr), circular nozzle (L=0.5 mm), Al filter 1.5μm, 2.8 mj, τ= 26 fs, z=-12 mm
23 Dependence on Relative Phase (a) Orthogonal polarization π-periodic modulation is clearly seen. (b) Parallel polarization At 38 th order (21.6 nm) conversion efficiency : , photon energy : 150 nj signal enhancement: 600 I J. Kim et al., Phys. Rev. Lett. 94, (2005)
24 Electron Paths in Two-color Field Ne, 30 fs, ortho. pol., I w =6x10 14 W/cm 2, I 2w =3x10 14 W/cm 2 (a) φ=0, long paths only; (e) φ=0.5π, short paths only C. M. Kim et al., J. Phys. B 39, 3199 (2006), Phys. Rev. A 72, (2005)
25 3. Applications Soft x-ray interferometry - spatial coherence of harmonic beam - point diffraction interferometry Attosecond physics - generation of attosecond pulses - temporal characterization of attosecond pulses - compensation of attosecond pulse chirp
26 Double-Pinhole Interferometry Double-pinhole (Φ=10μm) plate Harmonic x-ray (centered at 30 nm) Beam size of 130 μm (FWHM) divergence = 0.9 mrad d Spatial Coherence Measurement X-ray CCD Intensity (arb. units) Ti:sapphire laser pulse X-ray filter & Pinhole Gas-filled hollow tube Harmonic X-ray beam Wavelength (nm) Harmonic spectrum H27 > 68%
27 d = 100 μm Visibility = x (mm) Pinhole position d = 100 μm d = 200 μm d = 200 μm x (mm) Visibility > 0.8 Intensity (arb. units) Intensity (arb. units)
28 Pinhole plate (Φ=10 μm) Harmonic X-ray (Centered at 30 nm) Harmonic beam Lee et al., Opt. Lett. 28, 480 (2003) Point Diffraction Interferometry X-ray filter X-ray detector Point-diffracted beam Interferogram
29 Intensity (arb. units) Wavefront analysis of high harmonics Horizontal profile X (mm) Degree Wave-front error OPD error Measurement error due to the CCD pixel size of 24μm Radial distance (mm) The wave-front phase of the harmonic x-ray beam is nearly spherical within the error of λ/12. λ
30 Generation of Attosecond Pulses Phase-locked high harmonics can behave just like a modelocked laser, generating an attosecond pulse train. when phase-locked τ xuv To generate a single attosecond pulse, a continuum radiation with appropriate bandwidth is needed. > 24ω 0 ex) For 50 as, bandwidth > 24 ω 0 T 2N xuv laser harmonics Δωτ 1 2
31 RABBIT φ Temporal characterization of attosecond pulses q FROG-CRAB ( ) φ ω 2ω 0 Frequency Frequency A q ( ) A ω Assume Freq. comb Average phase ( ) = cos( ω0 + φ ) E t A q t XUV q q q= 2n+ 1 EXUV ( t) = A( ω) cos( ωt+ φ( ω) ) dω T 0 /2 Time Time
32 RABITT Reconstruction of Attosecond Beating by Interference of Two-photon Transition ψ f ωq 1 ω q+ 1 ω L ω L ω L ψ i Sideband interference f ( ( atomic) ) A cos 2 ϕ + ϕ ϕ +Δ ϕ, with ϕ = ω τ f L q q L L Amplitude modulation Relative phases of harmonics ω L ω q 1 ω q + 1 ω L ω Photoelectron signal ( t) Aqcos( ωqt ϕq) Ψ = + Paul et al., Science 292, 1689 (2001) q L ω L
33 Attosecond Pulse Chirp Attosecond pulses are either positively or negatively chirped, depending on which electron paths contribute to harmonic generation. In the harmonic generation process, several electron paths contribute. They form positively chirped as pulse when short path harmonics are superposed. Chirp compensation needed Negative GDD material can compensate for the positive chirp!!
34 Dispersion and Absorption n ( ω) 1 δ iβ; Looking for negative GDD = + Δ filter = ( Δ filter ) Single absorption 2 2 φ nωt/ c; GDD= d φ / dω Square-well transmission If an X-ray filter has square-well transmission, a negative GDD region exists at the lower frequency part. This X-ray filter can compress the attosecond pulse! (Zr, Ag, In, Sn ) GDD<0 Tin x-ray filter
35 Chirp compensation with a negative GDD material Attosecond pulse compression using x-ray filter material x-ray filter -GDD K. T. Kim et al., Phys. Rev. A 69, (R) (2004)
36 30fs, 815nm Ti:sapphire Laser 1 F=60cm Experimental Setup for Attosecond Physics Ar Gas Cell Time delay 200nm Al x-ray filter Ti:sapphire Laser 2 Gold-coated Toroidal mirror TOF electron spectrometer TOF 1 khz, 30 fs Ti:S Laser He
37 Self-compression of attosecond harmonic pulses A certain harmonic generation medium has negative GDD! 20 torr 30 torr Argon filled gas cell Generation, Compression, Filtering 40 torr 206-as pulse from 40-torr Ar (RABITT measurement)
38 Experimental result Photoelectron Energy ( τ) FROG-CRAB FROG for Complete Reconstruction of Attosecond Burst Transition amplitude a from 0> v> iφ () t iw ( Ip ) t a v, = i + dt e d E t e +, φ Gate p () X ( τ t ) Signal + ( t) = dt ( t ) + 2 ( t ) v A A t /2 Time delay (optical cycle)
39 I XUV (arb. units) Complete Reconstruction of Attosecond Pulse Train Reconstructed XUV Time (optical cycle) Reconstructed IR 300-as pulse train with 10-fs envelope Mairesse et al., Phys. Rev. A 71, (R) (2005) K. T. Kim et al. (CLEO 06 postdeadline paper) A 2 (arb. units) Time (optical cycle)
40 Time-resolved Atomic Inner-shell Spectroscopy dn dw W h W 1 W 2 W kin 0 W bind Drescher et al, Nature 419, 803 (2002) Streak images Kr, M(3d 5/2 ) τ h =7.9 fs Δt Photo emission τ x - duration of X-ray pulse Auger emission τ h - lifetime of core hole
41 Conclusion High harmonics are an ultrashort coherent soft x-ray source for various applications. In HHG itself, the following topics will be pursued. - Enhancement of energy ( > μj for a single order) - Extension of wavelength region (down to the water window) In applications of HHG, the following topics will be pursued. - Generation and characterization of strong attosecond pulses - Ultrafast atomic and molecular dynamics - Soft x-ray interferometry and microscopy High harmonic x-ray source is a light source for EXTREME SCIENCE in space nano metrology & time attosecond science!!
42 Acknowledgement This work has been supported by Korea Science and Engineering Foundation through the Creative Research Initiative Program.
Looking into the ultrafast dynamics of electrons
Looking into the ultrafast dynamics of electrons G. Sansone 1,2,3 1) Dipartimento di Fisica Politecnico Milano, Italy 2) Institute of Photonics and Nanotechnology, CNR Politecnico Milano Italy 3) Extreme
More informationConstruction of a 100-TW laser and its applications in EUV laser, wakefield accelerator, and nonlinear optics
Construction of a 100-TW laser and its applications in EUV laser, wakefield accelerator, and nonlinear optics Jyhpyng Wang ( ) Institute of Atomic and Molecular Sciences Academia Sinica, Taiwan National
More informationXUV attosecond pulses
XUV attosecond pulses D. Charalambidis / Univ. of Crete chara@iesl.forth.gr E. Benis E. Goulielmakis E. Hert L. Nikolopoulos N.A. Papadogiannis P. Tallas In collaboration with G. Tsakiris P. Tallas K.
More informationMODELLING PLASMA FLUORESCENCE INDUCED BY FEMTOSECOND PULSE PROPAGATION IN IONIZING GASES
MODELLING PLASMA FLUORESCENCE INDUCED BY FEMTOSECOND PULSE PROPAGATION IN IONIZING GASES V. TOSA 1,, A. BENDE 1, T. D. SILIPAS 1, H. T. KIM, C. H. NAM 1 National Institute for R&D of Isotopic and Molecular
More informationattosecond laser pulse
Kenichi Ishikawa ( ) http://ishiken.free.fr/english/lecture.html ishiken@atto.t.u-tokyo.ac.jp Advanced Plasma and Laser Science E attosecond laser pulse 1 attosecond pulse train (APT) isolated attosecond
More informationHigh-Harmonic Generation II
Soft X-Rays and Extreme Ultraviolet Radiation High-Harmonic Generation II Phasematching techniques Attosecond pulse generation Applications Specialized optics for HHG sources Dr. Yanwei Liu, University
More information1 Mathematical description of ultrashort laser pulses
1 Mathematical description of ultrashort laser pulses 1.1 We first perform the Fourier transform directly on the Gaussian electric field: E(ω) = F[E(t)] = A 0 e 4 ln ( t T FWHM ) e i(ω 0t+ϕ CE ) e iωt
More informationNonlinear Optics (WiSe 2015/16) Lecture 12: January 15, 2016
Nonlinear Optics (WiSe 2015/16) Lecture 12: January 15, 2016 12 High Harmonic Generation 12.1 Atomic units 12.2 The three step model 12.2.1 Ionization 12.2.2 Propagation 12.2.3 Recombination 12.3 Attosecond
More informationSUPPLEMENTARY INFORMATION
Fig. S1: High-Harmonic Interferometry of a Chemical Reaction A weak femtosecond laser pulse excites a molecule from its ground state (on the bottom) to its excited state (on top) in which it dissociates.
More informationHHG Sub-cycle dynamics
Quantum Optics and Laser Science Group Blackett Laboratory, Imperial College London HHG Sub-cycle dynamics 1. Chirp of electron recollision 2. Measuring ultra-fast intramolecular proton motion 3. Controlling
More informationtime is defined by physical processes
frontiers in attosecond science Louis F. DiMauro as 100 as as as n as 10-18 s 25 as 1 as 10-18 s 1 as n as modified from LCLS/SLAC website time is defined by physical processes a history of ultra-fast:
More informationHigh Harmonic Generation of Coherent EUV/SXR Radiation. David Attwood University of California, Berkeley
High Harmonic Generation of Coherent EUV/SXR Radiation David Attwood University of California, Berkeley Prof. David Attwood / UC Berkeley EE213 & AST21 / Spring 29 14_HHG_29.ppt HHG: Extreme nonlinear
More informationA.J. Verhoef, A.V. Mitrofanov, D. Kartashov, A. Baltuska Photonics Institute, Vienna University of Technology. E.E. Serebryannikov, A.M.
A.J. Verhoef, A.V. Mitrofanov, D. Kartashov, A. Baltuska Photonics Institute, Vienna University of Technology E.E. Serebryannikov, A.M. Zheltikov Physics Department, International Laser Center, M.V. Lomonosov
More informationAttosecond laser systems and applications
Attosecond laser systems and applications Adrian N. Pfeiffer Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA 8th Annual Laser Safety Officer Workshop September
More informationAssessment of Threshold for Nonlinear Effects in Ibsen Transmission Gratings
Assessment of Threshold for Nonlinear Effects in Ibsen Transmission Gratings Temple University 13th & Norris Street Philadelphia, PA 19122 T: 1-215-204-1052 contact: johanan@temple.edu http://www.temple.edu/capr/
More informationstabilized 10-fs lasers and their application to laser-based electron acceleration
Carrier-envelope envelope-phase-stabilized stabilized sub-10 10-fs lasers and their application to laser-based electron acceleration L. Veisz, E. Goulielmakis, A. Baltuška, and F. Krausz Vienna University
More informationRevival Structures of Linear Molecules in a Field-Free Alignment Condition as Probed by High-Order Harmonic Generation
Journal of the Korean Physical Society, Vol. 49, No. 1, July 2006, pp. 337 341 Revival Structures of Linear Molecules in a Field-Free Alignment Condition as Probed by High-Order Harmonic Generation G.
More informationVisualization of Xe and Sn Atoms Generated from Laser-Produced Plasma for EUV Light Source
3rd International EUVL Symposium NOVEMBER 1-4, 2004 Miyazaki, Japan Visualization of Xe and Sn Atoms Generated from Laser-Produced Plasma for EUV Light Source H. Tanaka, A. Matsumoto, K. Akinaga, A. Takahashi
More informationHigh order harmonic generation and applications
High order harmonic generation and applications E. CONSTANT Centre Laser Intenses et Applications H39 H69 ELI & Hilase Summer School 2016 1 21 26 August 2016 Introduction Laser are unique light sources:
More informationEXTREME ULTRAVIOLET AND SOFT X-RAY LASERS
Chapter 7 EXTREME ULTRAVIOLET AND SOFT X-RAY LASERS Hot dense plasma lasing medium d θ λ λ Visible laser pump Ch07_00VG.ai The Processes of Absorption, Spontaneous Emission, and Stimulated Emission Absorption
More informationLinear pulse propagation
Ultrafast Laser Physics Ursula Keller / Lukas Gallmann ETH Zurich, Physics Department, Switzerland www.ulp.ethz.ch Linear pulse propagation Ultrafast Laser Physics ETH Zurich Superposition of many monochromatic
More informationAMO physics with LCLS
AMO physics with LCLS Phil Bucksbaum Director, Stanford PULSE Center SLAC Strong fields for x-rays LCLS experimental program Experimental capabilities End-station layout PULSE Ultrafast X-ray Summer June
More informationATTOSECOND AND ANGSTROM SCIENCE
ADVANCES IN ATOMIC, MOLECULAR AND OPTICAL PHYSICS, VOL. 54 ATTOSECOND AND ANGSTROM SCIENCE HIROMICHI NIIKURA 1,2 and P.B. CORKUM 1 1 National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario,
More informationWavelength scaling of high-order harmonic yield from an optically prepared excited state atom
Wavelength scaling of high-order harmonic yield from an optically prepared excited state atom J. Chen 1, 3, Ya Cheng 2,, and Zhizhan Xu 2, 1 Institute of Applied Physics and Computational Mathematics,
More informationSUPPLEMENTARY INFORMATION
doi:10.1038/nature10721 Experimental Methods The experiment was performed at the AMO scientific instrument 31 at the LCLS XFEL at the SLAC National Accelerator Laboratory. The nominal electron bunch charge
More informationSupplemental material for Bound electron nonlinearity beyond the ionization threshold
Supplemental material for Bound electron nonlinearity beyond the ionization threshold 1. Experimental setup The laser used in the experiments is a λ=800 nm Ti:Sapphire amplifier producing 42 fs, 10 mj
More informationGeneration of ultrashort XUV femtosecond to attosecond pulses Katalin Varjú ELI-ALPS. 2nd MOLIM Training School 6 10 March, 2017 Paris-Saclay
Generation of ultrashort XUV femtosecond to attosecond pulses Katalin Varjú ELI-ALPS 2nd MOLIM Training School 6 10 March, 2017 Paris-Saclay Characteristic times Krausz: RevModPhys 81, 163 (2009) Fs light
More informationIntroduction to intense laser-matter interaction
Pohang, 22 Aug. 2013 Introduction to intense laser-matter interaction Chul Min Kim Advanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology (GIST) & Center for Relativistic
More informationControl of dispersion effects for resonant ultrashort pulses M. A. Bouchene, J. C. Delagnes
Control of dispersion effects for resonant ultrashort pulses M. A. Bouchene, J. C. Delagnes Laboratoire «Collisions, Agrégats, Réactivité», Université Paul Sabatier, Toulouse, France Context: - Dispersion
More informationOptical Spectroscopy of Advanced Materials
Phys 590B Condensed Matter Physics: Experimental Methods Optical Spectroscopy of Advanced Materials Basic optics, nonlinear and ultrafast optics Jigang Wang Department of Physics, Iowa State University
More informationThe structure of laser pulses
1 The structure of laser pulses 2 The structure of laser pulses Pulse characteristics Temporal and spectral representation Fourier transforms Temporal and spectral widths Instantaneous frequency Chirped
More informationOverview: Attosecond optical technology based on recollision and gating
Overview: Attosecond optical technology based on recollision and gating Zenghu Chang Kansas State University Team members Kansas State University Zenghu Chang (Dept. of Phys.) Lew Cocke (Dept. of Phys.)
More informationModels for Time-Dependent Phenomena
Models for Time-Dependent Phenomena I. Phenomena in laser-matter interaction: atoms II. Phenomena in laser-matter interaction: molecules III. Model systems and TDDFT Manfred Lein p. Outline Phenomena in
More information4. High-harmonic generation
Advanced Laser and Photn Science (Kenichi ISHIKAWA) for internal use only (Univ. of Tokyo) Kenichi Ishikawa () http://ishiken.free.fr/english/lecture.html ishiken@n.t.u-tokyo.ac.jp Advanced Laser and Photon
More informationPIs: Louis DiMauro & Pierre Agostini
Interaction of Clusters with Intense, Long Wavelength Fields PIs: Louis DiMauro & Pierre Agostini project objective: explore intense laser-cluster interactions in the strong-field limit project approach:
More informationIdeal laser waveform construction for the generation of super-bright attosecond pulses
Home Search Collections Journals About Contact us My IOPscience Ideal laser waveform construction for the generation of super-bright attosecond pulses This content has been downloaded from IOPscience.
More informationSet-up for ultrafast time-resolved x-ray diffraction using a femtosecond laser-plasma kev x-ray-source
Set-up for ultrafast time-resolved x-ray diffraction using a femtosecond laser-plasma kev x-ray-source C. Blome, K. Sokolowski-Tinten *, C. Dietrich, A. Tarasevitch, D. von der Linde Inst. for Laser- and
More informationModels for Time-Dependent Phenomena. I. Laser-matter interaction: atoms II. Laser-matter interaction: molecules III. Model systems and TDDFT
Models for Time-Dependent Phenomena I. Laser-matter interaction: atoms II. Laser-matter interaction: molecules III. Model systems and TDDFT Manfred Lein, TDDFT school Benasque 22 p. Outline Laser-matter
More informationStrongly Dispersive Transient Bragg Grating for High Harmonics
SLAC-PUB-14092 Strongly Dispersive Transient Bragg Grating for High Harmonics J. P. Farrell, 1,2 L. S. Spector, 1,2 M. B. Gaarde, 1,3 B. K. McFarland 1,2, P. H. Bucksbaum, 1,2 and Markus Gühr 1,2 1 Stanford
More informationSUPPLEMENTARY INFORMATION
SUPPLEMENTARY INFORMATION DOI: 10.1038/NPHYS2397 Strong-field physics with singular light beams M. Zürch, C. Kern, P. Hansinger, A. Dreischuh, and Ch. Spielmann Supplementary Information S.1 Spectrometric
More informationMultiphoton transitions for delay-zero calibration in attosecond spectroscopy arxiv: v1 [physics.atom-ph] 12 Jun 2014
Multiphoton transitions for delay-zero calibration in attosecond spectroscopy arxiv:1406.3137v1 [physics.atom-ph] 1 Jun 014 J Herrmann 1, M Lucchini 1, S Chen, M Wu, A Ludwig 1, L Kasmi 1, K J Schafer,
More informationWP-3: HHG and ultrafast electron imaging
WORKPACKAGE WP-3: HHG and ultrafast electron imaging Coordinators: P. Salières (CEA), A. Assion (FEMTO, Spectra Physics Vienna) Period: Start Month 4 End Month 48 Leading Participants (Orange in the picture):
More information37. 3rd order nonlinearities
37. 3rd order nonlinearities Characterizing 3rd order effects The nonlinear refractive index Self-lensing Self-phase modulation Solitons When the whole idea of χ (n) fails Attosecond pulses! χ () : New
More informationAmerican Institute of Physics 319
FEMTOSECOND RAMSEY FRINGES IN STRONGLY-DRIVEN RYDBERG SYSTEMS* R.R. Jones Physics Department, University of Virginia, Charlottesville, VA 22903 C.S. Raman, D.W. Schumacher, and P.H. Bucksbaum Physics Department,
More informationULTRAFAST LASER CONTROL. Of IONIZATION. Fundamentals And Applications. Thomas Baumert. Institut fuer Physik der Universitaet Kassel, GERMANY
ULTRAFAST LASER CONTROL Fundamentals And Applications Of IONIZATION Thomas Baumert Institut fuer Physik der Universitaet Kassel, GERMANY H. Baumann: first permanent Laser Sculpture / since Documenta 6
More informationMolecular alignment, wavepacket interference and Isotope separation
Molecular alignment, wavepacket interference and Isotope separation Sharly Fleischer, Ilya Averbukh and Yehiam Prior Chemical Physics, Weizmann Institute Yehiam.prior@weizmann.ac.il Frisno-8, Ein Bokek,
More informationTowards 100 MeV proton generation using ultrathin targets irradiated with petawatt laser pulses
IZEST_Tokyo 2013.11.18 Towards 100 MeV proton generation using ultrathin targets irradiated with petawatt laser pulses Chang Hee Nam 1,2, I J. Kim 1,3, H. T. Kim 1,3, I. W. Choi 1,3, K. H. Pae 1,3, C.
More informationBeam manipulation with high energy laser in accelerator-based light sources
Beam manipulation with high energy laser in accelerator-based light sources Ming-Chang Chou High Brightness Injector Group FEL winter school, Jan. 29 ~ Feb. 2, 2018 Outline I. Laser basic II. III. IV.
More informationHigh-order harmonics with fully tunable polarization by attosecond synchronization of electron recollisions
High-order harmonics with fully tunable polarization by attosecond synchronization of electron recollisions,, Ofer Kfir, Zvi Diskin, Pavel Sidorenko and Oren Cohen Department of Physics and Optical Engineering,
More informationXUV frequency comb development for precision spectroscopy and ultrafast science
XUV frequency comb development for precision spectroscopy and ultrafast science R. Jason Jones (PI) College of Optical Sciences, University of Arizona email: rjjones@optics.arizona.edu Collaborators Graduate
More informationLaser heating of noble gas droplet sprays: EUV source efficiency considerations
Laser heating of noble gas droplet sprays: EUV source efficiency considerations S.J. McNaught, J. Fan, E. Parra and H.M. Milchberg Institute for Physical Science and Technology University of Maryland College
More informationMeasurement and control of the frequency chirp rate of high-order harmonic pulses
Measurement and control of the frequency chirp rate of high-order harmonic pulses Mauritsson, Johan; Johnsson, Per; Lopez, Rodrigo; Varju, Katalin; Kornelis, W; Biegert, J; Keller, U; Gaarde, MB; Schafer,
More informationElectron dynamics in a strong laser field
Available online at www.worldscientificnews.com WSN 35 (2016) 1-16 EISSN 2392-2192 Electron dynamics in a strong laser field C. C. Gunatilaka, K. A. I. L. Wijewardena Gamalath* Department of Physics, University
More informationAttosecond optics and technology: progress to date and future prospects [Invited]
Review Vol. 33, No. 6 / June 2016 / Journal of the Optical Society of America B 1081 Attosecond optics and technology: progress to date and future prospects [Invited] ZENGHU CHANG, 1, *PAUL B. CORKUM,
More informationSupplementary Material for In situ frequency gating and beam splitting of vacuum- and extreme-ultraviolet pulses
Supplementary Material for In situ frequency gating and beam splitting of vacuum- and extreme-ultraviolet pulses Rajendran Rajeev, Johannes Hellwagner, Anne Schumacher, Inga Jordan, Martin Huppert, Andres
More informationLaser-driven intense X-rays : Studies at RRCAT
Laser-driven intense X-rays : Studies at RRCAT B. S. Rao Laser Plasma Division Team Effort Principal contributors : Experiment: P. D. Gupta, P. A. Naik, J. A. Chakera, A. Moorti, V. Arora, H. Singhal,
More informationReview Article Strong Field-Induced Frequency Conversion of Laser Radiation in Plasma Plumes: Recent Achievements
Hindawi Publishing Corporation The Scientific World Journal Volume 213, Article ID 12767, 18 pages http://dx.doi.org/1.1155/213/12767 Review Article Strong Field-Induced Frequency Conversion of Laser Radiation
More information37. 3rd order nonlinearities
37. 3rd order nonlinearities Characterizing 3rd order effects The nonlinear refractive index Self-lensing Self-phase modulation Solitons When the whole idea of χ (n) fails Attosecond pulses! χ () : New
More informationCoherent interaction of femtosecond extreme-uv light with He atoms
Coherent interaction of femtosecond extreme-uv light with He atoms Daniel Strasser, Thomas Pfeifer, Brian J. Hom, Astrid M. Müller, Jürgen Plenge, and Stephen R. Leone Departments of Chemistry and Physics,
More informationAuthor(s): Niikura, Hiromichi; Wörner, Hans Jakob; Villeneuve, David M.; Corkum, Paul B.
Research Collection Journal Article Probing the Spatial Structure of a Molecular Attosecond Electron Wave Packet Using Shaped Recollision Trajectories Author(s): Niikura, Hiromichi; Wörner, Hans Jakob;
More informationElectron-Acoustic Wave in a Plasma
Electron-Acoustic Wave in a Plasma 0 (uniform ion distribution) For small fluctuations, n ~ e /n 0
More informationFig. 1. (b) (a) XUV pulse train. Attosecond physics: Metrology and applications of attosecond pulses.
Attosecond phsics: Metrolog and applications of attosecond pulses. 1. Introduction Progress in optical pulse engineering over the last twent ears led to the generation of laser pulses with duration of
More informationPhase matching techniques for coherent soft-x-ray generation
Phase matching techniques for coherent soft-x-ray generation A. Paul, E.A. Gibson, X. Zhang, A. Lytle, T. Popmintchev, X. Zhou, M.M. Murnane, I.P. Christov, and H.C. Kapteyn Department of Physics and JILA,
More informationRichard Miles and Arthur Dogariu. Mechanical and Aerospace Engineering Princeton University, Princeton, NJ 08540, USA
Richard Miles and Arthur Dogariu Mechanical and Aerospace Engineering Princeton University, Princeton, NJ 08540, USA Workshop on Oxygen Plasma Kinetics Sept 20, 2016 Financial support: ONR and MetroLaser
More informationTime-frequency characterization of femtosecond extreme ultraviolet pulses.
Time-frequency characterization of femtosecond extreme ultraviolet pulses. Norin, Johan; Mauritsson, Johan; Johansson, Ann; Raarup, M K; Buil, S; Persson, Anders; Dühr, O; Gaarde, Mette; Schafer, Kenneth;
More informationHigh-energy collision processes involving intense laser fields
High-energy collision processes involving intense laser fields Carsten Müller Max Planck Institute for Nuclear Physics, Theory Division (Christoph H. Keitel), Heidelberg, Germany EMMI Workshop: Particle
More informationCHINESE JOURNAL OF PHYSICS VOL. 52, NO. 1-II February Intense Few-Cycle Infrared Laser Pulses at the Advanced Laser Light Source
CHINESE JOURNAL OF PHYSICS VOL. 52, NO. 1-II February 2014 Review Intense Few-Cycle Infrared Laser Pulses at the Advanced Laser Light Source B. E. Schmidt, 1 A. D. Shiner, 2 M. Giguère, 1 C. Trallero-Herrero,
More informationThe spectrum of electromagnetic waves stretches from radio waves to gamma rays (Fig. VIII-1).
VIII. Ultrafast Optics Introduction Coherent light The spectrum of electromagnetic waves stretches from radio waves to gamma rays (Fig. VIII-1). Fig. VIII-1 Thanks to their long wavelengths, radio waves
More informationIntrinsic beam emittance of laser-accelerated electrons measured by x-ray spectroscopic imaging
Intrinsic beam emittance of laser-accelerated electrons measured by x-ray spectroscopic imaging G. Golovin 1, S. Banerjee 1, C. Liu 1, S. Chen 1, J. Zhang 1, B. Zhao 1, P. Zhang 1, M. Veale 2, M. Wilson
More informationWhere are the Fringes? (in a real system) Div. of Amplitude - Wedged Plates. Fringe Localisation Double Slit. Fringe Localisation Grating
Where are the Fringes? (in a real system) Fringe Localisation Double Slit spatial modulation transverse fringes? everywhere or well localised? affected by source properties: coherence, extension Plane
More informationTime resolved optical spectroscopy methods for organic photovoltaics. Enrico Da Como. Department of Physics, University of Bath
Time resolved optical spectroscopy methods for organic photovoltaics Enrico Da Como Department of Physics, University of Bath Outline Introduction Why do we need time resolved spectroscopy in OPV? Short
More informationHigh-contrast pump-probe spectroscopy with high-order harmonics
UVX 2008 (2009) 107 111 C EDP Sciences, 2009 DOI: 10.1051/uvx/2009017 High-contrast pump-probe spectroscopy with high-order harmonics Y. Mairesse 1,W.Boutu 2, P. Breger 2, E. Constant 1,D.Descamps 1, N.
More informationEUV and Soft X-Ray Optics
EUV and Soft X-Ray Optics David Attwood University of California, Berkeley Cheiron School September 2011 SPring-8 1 The short wavelength region of the electromagnetic spectrum n = 1 δ + iβ δ, β
More informationLecture 11: Introduction to diffraction of light
Lecture 11: Introduction to diffraction of light Diffraction of waves in everyday life and applications Diffraction in everyday life Diffraction in applications Spectroscopy: physics, chemistry, medicine,
More informationThe Lund Attosecond Science Centre in the MEDEA network PER THE MEDEA KICK-OFF MEETING, BERLIN, JANUARY 2015
The Lund Attosecond Science Centre in the MEDEA network PER JOHNSSON @ THE MEDEA KICK-OFF MEETING, BERLIN, JANUARY 2015 Lund University Founded in 1666 47 700 students (individuals) 7 500 employees - 840
More informationLecture 9: Introduction to Diffraction of Light
Lecture 9: Introduction to Diffraction of Light Lecture aims to explain: 1. Diffraction of waves in everyday life and applications 2. Interference of two one dimensional electromagnetic waves 3. Typical
More informationNonlinear Optics (WiSe 2016/17) Lecture 9: December 16, 2016 Continue 9 Optical Parametric Amplifiers and Oscillators
Nonlinear Optics (WiSe 2016/17) Lecture 9: December 16, 2016 Continue 9 Optical Parametric Amplifiers and Oscillators 9.10 Passive CEP-stabilization in parametric amplifiers 9.10.1 Active versus passive
More informationPhotoelectron Spectroscopy using High Order Harmonic Generation
Photoelectron Spectroscopy using High Order Harmonic Generation Alana Ogata Yamanouchi Lab, University of Tokyo ABSTRACT The analysis of photochemical processes has been previously limited by the short
More informationC. D. Lin Kansas State U.
Dynamic Imaging of molecules using laser-induced Highorder harmonics and High-energy photoelectrons Goal: probing time-dependent structural changes Example: Isomerization of C 2 H 2 C. D. Lin Kansas State
More informationDiagnostic Systems for Characterizing Electron Sources at the Photo Injector Test Facility at DESY, Zeuthen site
1 Diagnostic Systems for Characterizing Electron Sources at the Photo Injector Test Facility at DESY, Zeuthen site Sakhorn Rimjaem (on behalf of the PITZ team) Motivation Photo Injector Test Facility at
More informationChapter 13. High Harmonic Generation
Chapter 13 High Harmonic Generation High harmonic generation (HHG) is a technique for producing spatially and temporally coherent extreme-ultraviolet (EUV) light, as well as light pulses as short as hundred
More informationTwo- and three-photon ionization of rare gases using femtosecond harmonic pulses generated in a gas medium
Two- and three-photon ionization of rare gases using femtosecond harmonic pulses generated in a gas medium Descamps, D; Roos, L; Delfin, C; Lhuillier, A; Wahlström, Claes-Göran Published in: Physical Review
More informationDispersion and how to control it
Dispersion and how to control it Group velocity versus phase velocity Angular dispersion Prism sequences Grating pairs Chirped mirrors Intracavity and extra-cavity examples 1 Pulse propagation and broadening
More informationLecture 4 Fiber Optical Communication Lecture 4, Slide 1
ecture 4 Dispersion in single-mode fibers Material dispersion Waveguide dispersion imitations from dispersion Propagation equations Gaussian pulse broadening Bit-rate limitations Fiber losses Fiber Optical
More informationBrightness and Coherence of Synchrotron Radiation and Free Electron Lasers. Zhirong Huang SLAC, Stanford University May 13, 2013
Brightness and Coherence of Synchrotron Radiation and Free Electron Lasers Zhirong Huang SLAC, Stanford University May 13, 2013 Introduction GE synchrotron (1946) opened a new era of accelerator-based
More informationUltrafast nanoscience with ELI ALPS
Ultrafast nanoscience with ELI ALPS Péter Dombi Wigner Research Centre for Physics, Budapest & Max Planck Institute of Quantum Optics, Garching Overview ultrafast (femtosecond/attosecond) dynamicsin metal
More informationElectron dynamics in a strong laser field with Gaussian Potential well
Available online at www.worldscientificnews.com WSN 40 (2016) 265-284 EISSN 2392-2192 Electron dynamics in a strong laser field with Gaussian Potential well C. C. Gunatilaka, K. A. I. L. Wijewardena Gamalath*
More informationMultidimensional femtosecond coherence spectroscopy for study of the carrier dynamics in photonics materials
International Workshop on Photonics and Applications. Hanoi, Vietnam. April 5-8,24 Multidimensional femtosecond coherence spectroscopy for study of the carrier dynamics in photonics materials Lap Van Dao,
More informationPropagation losses in optical fibers
Chapter Dielectric Waveguides and Optical Fibers 1-Fev-017 Propagation losses in optical fibers Charles Kao, Nobel Laureate (009) Courtesy of the Chinese University of Hong Kong S.O. Kasap, Optoelectronics
More informationNo. 9 Experimental study on the chirped structure of the construct the early time spectra. [14;15] The prevailing account of the chirped struct
Vol 12 No 9, September 2003 cfl 2003 Chin. Phys. Soc. 1009-1963/2003/12(09)/0986-06 Chinese Physics and IOP Publishing Ltd Experimental study on the chirped structure of the white-light continuum generation
More informationarxiv: v1 [cond-mat.mes-hall] 24 May 2013
arxiv:35.56v [cond-mat.mes-hall] 4 May 3 Effects of excitation frequency on high-order terahertz sideband generation in semiconductors Xiao-Tao Xie Department of Physics, The Chinese University of Hong
More informationSUPPLEMENTARY INFORMATION
SUPPLEMENTARY INFORMATION DOI: 10.1038/NPHYS2029 Generalized Molecular Orbital Tomography Supplementary Information C. Vozzi, M. Negro, F. Calegari, G. Sansone, M. Nisoli, S. De Silvestri, and S. Stagira
More informationAtomic and macroscopic measurements of attosecond pulse trains
Atomic and macroscopic measurements of attosecond pulse trains Dahlström, Marcus; Fordell, Thomas; Mansten, Erik; Ruchon, T.; Swoboda, Marko; Klünder, Kathrin; Gisselbrecht, Mathieu; Lhuillier, A; Mauritsson,
More informationCoherent Electron Scattering Captured by an Attosecond Quantum Stroboscope
1 Coherent Electron Scattering Captured by an Attosecond Quantum Stroboscope J. Mauritsson 1, P. Johnsson 1, E. Gustafsson 1, M. Swoboda 1, T. Ruchon 1, A. L Huillier 1 & K. J. Schafer 2 1 Department of
More informationSOFT X-RAYS AND EXTREME ULTRAVIOLET RADIATION
SOFT X-RAYS AND EXTREME ULTRAVIOLET RADIATION Principles and Applications DAVID ATTWOOD UNIVERSITY OF CALIFORNIA, BERKELEY AND LAWRENCE BERKELEY NATIONAL LABORATORY CAMBRIDGE UNIVERSITY PRESS Contents
More informationThe spectrogram in acoustics
Measuring the power spectrum at various delays gives the spectrogram 2 S ω, τ = dd E t g t τ e iii The spectrogram in acoustics E ssssss t, τ = E t g t τ where g t is a variable gating function Frequency
More informationAn extreme ultraviolet interferometer using high order harmonic generation
An extreme ultraviolet interferometer using high order harmonic generation Author Laban, Dane, Palmer, Adam, Wallace, William, Gaffney, Naylyn, Notermans, Remy, Clevis, Thijs, Pullen, Michael, Jiang, D.,
More informationTransmission Electron Microscopy
L. Reimer H. Kohl Transmission Electron Microscopy Physics of Image Formation Fifth Edition el Springer Contents 1 Introduction... 1 1.1 Transmission Electron Microscopy... 1 1.1.1 Conventional Transmission
More informationEffects of driving laser jitter on the attosecond streaking measurement
Effects of driving laser jitter on the attosecond streaking measurement Shiyang Zhong, 1 Xinkui He, 1, Peng Ye, 1 Minjie Zhan, 1 Hao Teng 1 and Zhiyi Wei 1,* 1 Beijing National Laboratory for Condensed
More informationTHz 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