Testing an Integrated Tunable Quantum Cascade Laser

Transcription

1 Testing an Integrated Tunable Quantum Cascade Laser Douglas Janssen 1, Halley Cromley 2, Mohammad Islam 3, Fow-Sen Choa 3 1 Greater Grace Christian Academy, 6063 Moravia Park Drive, Baltimore, MD 21206, USA 2 Johns Hopkins University, 3400 N. Charles Street Baltimore, MD 21218, USA 3 University of Maryland Baltimore County, Dept. of CSEE, 1000 Hilltop Circle, Baltimore, MD choa@umbc.edu

2 Superstructure Grating (SSG) DBR Laser D. Guo; Li, J.-Y.; Cheng, L.; Chen, X.; Worchesky, T.; Choa, F.-S. Widely Tunable Monolithic Mid-Infrared Quantum Cascade Lasers Using Super-Structure Grating Reflectors. Photonics 3(25) Superstructure grating (SSG) designs are used to create widely tunable lasers with wavelength selectivity achieved by matching SSG modes of the front and rear grating section. For structure comparisons see poster by H. Cromley

3 SSG-DBR Laser Tuning Methods A B Two tuning methods were employed: For tuning ranges and best method, please visit my poster! Method A: Constant voltage to gain section while varying current to either rear or front grating. Method B: Constant voltage to gain section while supplying current to both rear or front grating; DC bias applied to either front or rear grating.

4 Key SSG-DBR Test Issues FT-IR Spectrometer: 1. Artifacts caused by FT-IR scan velocity / laser repetition rate mismatch 2. Artifacts caused by interferometer mirror assembly magnet failure

5 Please visit my poster! References [1] A. Kosterev, G. Wysocki, Y. Bakhirkin, S. So, R. Lewicki, M. Fraser, F. Tittel and R.F. Curl, Application of quantum cascade lasers to trace gas analysis, Appl. Phys. B 90, (2008). [2] X. Chen, L. Cheng, D. Guo, Y. Kostov, and F.-S. Choa, Quantum cascade laser based standoff photoacoustic chemical detection, Opt. Express 19, (2011). [3] Kosterev, A. A., & Tittel, F. K. Chemical sensors based on quantum cascade lasers. IEEE Journal of Quantum Electronics, 38(6), (2002). [4] X. Chen, D. Guo, F.-S. Choa, C.-C. Wang, S. Trivedi, A. P. Snyder, G. Ru, and J. Fan, Standoff photoacoustic detection of explosives using quantum cascade laser and an ultrasensitive microphone, Appl. Opt., 52(12), (2013). [5] A. Hugi, R. Terazzi, Y. Bonetti, A. Wittmann, M. Fischer, M. Beck, J. Faist, and E. Gini, External cavity quantum cascade laser tunable from 7.6 to 11.4 μm, Appl. Phys. Lett. 95(6), (2009). [6] Y. Bai, S. Slivken, S. R. Darvish, A. Haddadi, B. Gokden, and M. Razeghi, High Power broad area quantum cascade lasers, Appl. Phys. Lett. 95(22), (2009). [7] A. Lyakh, R. Maulini, A. Tsekoun, R. Go, and C. K. N. Patel, Multiwatt long wavelength quantum cascade lasers based on high strain composition with 70% injection efficiency, Opt. Express, 20(22), (2012). [8] D. Guo L. Cheng, X. Chen, F.-S. Choa, J. Fan and T. Worchesky, Electrical derivative measurement of quantum cascade lasers, J. Appl. Phys. 109, (2011). [9] D. Guo; Li, J.-Y.; Cheng, L.; Chen, X.; Worchesky, T.; Choa, F.-S. Widely Tunable Monolithic Mid-Infrared Quantum Cascade Lasers Using Super-Structure Grating Reflectors. Photonics 3(25) [10] C. Gmachl, A. Straub, Axel, R. Colombelli, F. Capasso, D. L. Sivco, A.M. Sergent, A. Y. Cho, Singlemode, tunable distributed-feedback and multiple-wavelength quantum cascade lasers, IEEE J. Quant. Elec. 38(6), (2002). [11] L. Cheng, X. Chen, F.-S. Choa, T. Worchesky, Integrated tunable DBR quantum cascade lasers with 30 cm-1 tuning range at 4.7 μm, Proc. SPIE 7616, (2010). [12] F. Xie, C. Caneau, H. LeBlanc, S. Coleman, L. C. Hughes, and C.-E. Zah, Pulsed wavelength tuning and continuous wave operation of distributed bragg reflector quantum cascade lasers, Lasers and Electro-Optics (CLEO), CTh3N.4 (2012)Khurgin, J. B., Yamac Dikmelik, Andreas Hugi, and Jerome Faist. "Coherent frequency combs produced by self frequency modulation in quantum cascade lasers." Applied Physics Letters 104, no. 8 (2014): [13] B. G. Lee, H. A. Zhang, C. Pflügl, L. Diehl, M. A. Belkin, M. Fischer, A. Wittmann, J. Faist, and F.Capasso, Broadband Distributed-Feedback Quantum Cascade Laser Array Operating From 8.0 to 9.8μm,IEEE Photon. Technol. Lett. 21(13), (2009). [14] T. S. Mansuripur, S. Menzel, R. Blanchard, L. Diehl, C. Pflügl, Y. Huang, J.-H. Ryou, R. D. Dupuis, M.Loncar, and F. Capasso, Widely tunable mid-infrared quantum cascade lasers using sampled grating reflectors, Opt. Express, 20(21), (2012). [15] Troccoli M, Wang X, Fan J; Quantum cascade lasers: high-power emission and single-mode operation in the long-wave infrared (λ>6 μm). Opt. Eng. 0001;49(11): (2010) [16] S. Slivken, N. Bandyopadhyay, S. Tsao, S. Nida, Y. Bai, Q. Y. Lu and M. Razeghi, Sampled grating, distributed feedback quantum cascade lasers with broad tunability and continuous operation at room temperature, Appl. Phys. Lett. 100, (2012) [17] Lee, B. G., Belkin, M. A., Audet, R., MacArthur, J., Diehl, L., Pflugl, C.,... & Bour, D. (2007). Widely tunable single-mode quantum cascade laser source for mid-infrared spectroscopy. Applied Physics Letters, 91(23), This material is based upon work supported by the National Science Foundation under Grant No. EEC