Broadband monolithic extractors for terahertz quantum cascade laser based frequency combs (Conference Presentation)

2017 ◽  
Author(s):  
Markus Rösch ◽  
Ileana-Cristina Benea-Chelmus ◽  
Giacomo Scalari ◽  
Christopher B. Bonzon ◽  
Martin J. Süess ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Frequency Combs ◽  
Quantum Cascade

scholarly journals Mid-infrared quantum cascade laser frequency combs with a microstrip-like line waveguide geometry

2021 ◽  
Vol 118 (7) ◽  
pp. 071101
Author(s):  
Filippos Kapsalidis ◽  
Barbara Schneider ◽  
Matthew Singleton ◽  
Mathieu Bertrand ◽  
Emilio Gini ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Laser Frequency ◽  
Mid Infrared ◽  
Frequency Combs ◽  
Quantum Cascade ◽  
Waveguide Geometry

scholarly journals Tunable and compact dispersion compensation of broadband THz quantum cascade laser frequency combs

2019 ◽  
Vol 27 (15) ◽  
pp. 20231 ◽  
Author(s):  
Francesco P. Mezzapesa ◽  
Valentino Pistore ◽  
Katia Garrasi ◽  
Lianhe Li ◽  
A. Giles Davies ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Dispersion Compensation ◽  
Laser Frequency ◽  
Frequency Combs ◽  
Quantum Cascade

scholarly journals Repetition frequency locking of a terahertz quantum cascade laser emitting at 4.2 THz

2020 ◽  
Vol 13 (1) ◽  
pp. 32-40
Author(s):  
Wen Guan ◽  
Ziping Li ◽  
Kang Zhou ◽  
Wenjian Wan ◽  
Xiaoyu Liao ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Continuous Wave ◽  
Frequency Comb ◽  
Signal To Noise Ratio ◽  
Phase Lock Loop ◽  
Wave Mode ◽  
Repetition Frequency ◽  
Frequency Locking ◽  
Frequency Combs ◽  
Quantum Cascade

The electrically-pumped terahertz quantum cascade laser (QCL) is characterized by high power emission, compact, broad frequency coverage, and so on, which shows abilities for frequency comb operations. Although free-running QCLs can work as frequency combs by designing the laser structure with small group velocity dispersions and/or inserting mirrors to compensate laser intrinsic dispersions, the ideal comb operation can only be obtained by firmly locking the repetition frequency and carrier frequency of a laser. In this work, we have reported a repetition frequency locking of a terahertz QCL emitting around 4.2 THz. When the 6-mm-long laser is operated in continuous wave mode without any locking techniques, the repetition frequency is measured to be ~6.15 GHz with a linewidth of hundred kilohertz. Once a phase lock loop (PLL) is applied to dynamically control the drive current of the QCL, we have demonstrated a successful repetition frequency locking of the laser with a signal to noise ratio of 80 dB. This technique can be employed for the frequency comb and dual-comb operations of terahertz QCLs for high-resolution applications.

scholarly journals Evaluating the coherence and time-domain profile of quantum cascade laser frequency combs

2015 ◽  
Vol 23 (2) ◽  
pp. 1190 ◽  
Author(s):  
David Burghoff ◽  
Yang Yang ◽  
Darren J. Hayton ◽  
Jian-Rong Gao ◽  
John L. Reno ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Time Domain ◽  
Laser Frequency ◽  
Frequency Combs ◽  
Quantum Cascade ◽  
Domain Profile

scholarly journals Dual-comb spectroscopy based on quantum-cascade-laser frequency combs

2014 ◽  
Vol 5 (1) ◽  
Author(s):  
Gustavo Villares ◽  
Andreas Hugi ◽  
Stéphane Blaser ◽  
Jérôme Faist
Keyword(s):  
Quantum Cascade Laser ◽  
Laser Frequency ◽  
Frequency Combs ◽  
Quantum Cascade

scholarly journals Broadband monolithic extractor for metal-metal waveguide based terahertz quantum cascade laser frequency combs

2017 ◽  
Vol 111 (2) ◽  
pp. 021106 ◽  
Author(s):  
Markus Rösch ◽  
Ileana-Cristina Benea-Chelmus ◽  
Christopher Bonzon ◽  
Martin J. Süess ◽  
Mattias Beck ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Laser Frequency ◽  
Frequency Combs ◽  
Quantum Cascade ◽  
Metal Waveguide ◽  
Metal Metal

scholarly journals Tuning properties of mid-infrared Fabry-Pérot quantum cascade lasers for multiheterodyne spectroscopy

2016 ◽  
Vol 8 (4) ◽  
pp. 113 ◽  
Author(s):  
Lukasz Antoni Sterczewski ◽  
Jonas Westberg ◽  
Gerard Wysocki
Keyword(s):  
High Resolution ◽  
Quantum Cascade Laser ◽  
Quantum Cascade Lasers ◽  
Laser Frequency ◽  
Hole Burning ◽  
Mid Infrared ◽  
Frequency Combs ◽  
Quantum Cascade ◽  
Fabry Perot ◽  
Cascade Lasers

Injection current tuning properties of an 8.5 um Fabry-Pérot mid-infrared quantum cascade laser are evaluated by analyzing the mode-by-mode frequency tuning behavior with an identification of high-noise regimes in a delayed self-heterodyne experiment. We find that modes on the edges of the spectral envelope exhibit anomalous tuning coefficients compared to those in the center. Furthermore, the frequencies of individual modes are susceptible to parasitic etalons, likely causing laser frequency pulling. Despite the complicated tuning behavior, low phase-noise operating regimes exist, and are compatible with high resolution multiheterodyne spectroscopy of gases. Full Text: PDF ReferencesJ. Faist, F. Capasso, D.L. Sivco, C. Sirtori, A.L. Hutchinson, A.Y. Cho, "Quantum Cascade Laser", Science 264 (1994) 553?556. CrossRef A. Hugi, G. Villares, S. Blaser, H.C. Liu, J. Faist, "Mid-infrared frequency comb based on a quantum cascade laser", Nature 492 (2012) 229?233. CrossRef G. Villares, A. Hugi, S. Blaser, J. Faist,"Dual-comb spectroscopy based on quantum-cascade-laser frequency combs", Nat. Commun. 5 (2014) 5192. CrossRef G. Villares, S. Riedi, J. Wolf, D. Kazakov, M.J. Süess, P. Jouy, M. Beck, J. Faist, "Dispersion engineering of quantum cascade laser frequency combs", Optica 3 (2016) 252. CrossRef Y. Wang, M.G. Soskind, W. Wang, G. Wysocki, "High-resolution multi-heterodyne spectroscopy based on Fabry-Perot quantum cascade lasers", Appl. Phys. Lett. 104 (2014) 31114. CrossRef A. Hangauer, J. Westberg, E. Zhang, G. Wysocki, "Wavelength modulated multiheterodyne spectroscopy using Fabry-Pérot quantum cascade lasers", Opt. Express 24 (2016) 25298. CrossRef D. Burghoff, Y. Yang, D.J. Hayton, J.-R. Gao, J.L. Reno, Q. Hu, "Evaluating the coherence and time-domain profile of quantum cascade laser frequency combs", Opt. Express 23 (2015) 1190?1202. CrossRef A. Gordon, C.Y. Wang, L. Diehl, F.X. Kärtner, A. Belyanin, D. Bour, S. Corzine, G. Höfler, H.C. Liu, H. Schneider, T. Maier, M. Troccoli, J. Faist, F. Capasso, "Multimode regimes in quantum cascade lasers: From coherent instabilities to spatial hole burning", Phys. Rev. A 77 (2008). CrossRef S. Blaser, D.A. Yarekha, L. Hvozdara, Y. Bonetti, A. Muller, M. Giovannini, J. Faist, "Room-temperature, continuous-wave, single-mode quantum-cascade lasers at ?=5.4?m", Appl. Phys. Lett. 86 (2005) 41109. CrossRef S. Schiller, "Spectrometry with frequency combs", Opt. Lett. 27 (2002) 766?768. CrossRef T. Tsai, G. Wysocki, "Active wavelength control of an external cavity quantum cascade laser", Appl. Phys. B Lasers Opt. 109 (2012) 415?421. CrossRef

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