Absolute frequency measurement and phase-locking of a THz quantum cascade laser with 10 GHz Ti:sapphire frequency combs

2016 ◽  
Author(s):  
O. Kliebisch ◽  
D. C. Heinecke ◽  
T. Dekorsy ◽  
H. Li ◽  
C. Sirtori ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Phase Locking ◽  
Frequency Measurement ◽  
Absolute Frequency ◽  
Frequency Combs ◽  
Quantum Cascade

Spectral Properties of THz Quantum-Cascade Lasers: Frequency Noise, Phase-Locking and Absolute Frequency Measurement

2013 ◽  
Vol 34 (5-6) ◽  
pp. 342-356 ◽  
Author(s):  
Marco Ravaro ◽  
Vishal Jagtap ◽  
Christophe Manquest ◽  
Pierre Gellie ◽  
Giorgio Santarelli ◽  
...  
Keyword(s):  
Spectral Properties ◽  
Quantum Cascade Lasers ◽  
Phase Locking ◽  
Frequency Measurement ◽  
Frequency Noise ◽  
Absolute Frequency ◽  
Quantum Cascade ◽  
Cascade Lasers

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 Controlling and Phase‐Locking a THz Quantum Cascade Laser Frequency Comb by Small Optical Frequency Tuning

2021 ◽  
pp. 2000417
Author(s):  
Luigi Consolino ◽  
Annamaria Campa ◽  
Michele De Regis ◽  
Francesco Cappelli ◽  
Giacomo Scalari ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Frequency Tuning ◽  
Frequency Comb ◽  
Phase Locking ◽  
Laser Frequency ◽  
Optical Frequency ◽  
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 ◽  
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