scholarly journals Laser Frequency Combs with Fast Gain Recovery: Physics and Applications

2021 ◽  
pp. 2100403
Author(s):  
Marco Piccardo ◽  
Federico Capasso
Keyword(s):  
Laser Frequency ◽  
Frequency Combs ◽  
Gain Recovery

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 Time-dependent population inversion gratings in laser frequency combs

Optica ◽  
2018 ◽  
Vol 5 (4) ◽  
pp. 475 ◽  
Author(s):  
Marco Piccardo ◽  
Dmitry Kazakov ◽  
Noah A. Rubin ◽  
Paul Chevalier ◽  
Yongrui Wang ◽  
...  
Keyword(s):  
Population Inversion ◽  
Laser Frequency ◽  
Time Dependent ◽  
Frequency Combs

Precision Mid-Infrared Frequency Comb Spectroscopy using a Cross-Dispersed Spectrometer

2021 ◽  
Author(s):  
D. Michelle Bailey ◽  
Gang Zhao ◽  
Adam J. Fleisher
Keyword(s):  
Frequency Comb ◽  
Difference Frequency Generation ◽  
Laser Frequency ◽  
Trace Gas ◽  
Molecular Fingerprint ◽  
Mid Infrared ◽  
Optical Frequency Combs ◽  
Frequency Combs ◽  
Infrared Spectral ◽  
Fingerprint Region

<p>Advances in optical technology have led to the commercialization and widespread use of broadband optical frequency combs for multiplexed measurements of trace-gas species. Increasingly available in the mid-infrared spectral region, these devices can be leveraged to interrogate the molecular fingerprint region where many fundamental rovibrational transitions occur. Here we present a cross-dispersed spectrometer employing a virtually imaged phased array etalon and ruled diffraction grating coupled with a difference frequency generation comb centered near 4.5 µm. The spectrometer achieves sub-GHz spectral resolution with a 30 cm<sup>-1</sup> instantaneous bandwidth. Laboratory results for nitrous oxide isotopic abundance retrieval will be presented. Challenges relating to characterizing the instrument lineshape function, constructing a frequency axis traceable to the comb, and accurate spectral modelling will be addressed and progress towards incorporating a more compact laser frequency comb source into the system will be discussed.</p>

Frequency combs and precision spectroscopy of atomic hydrogen

2019 ◽  
pp. 142-215
Author(s):  
Thomas Udem
Keyword(s):  
High Resolution ◽  
Visible Light ◽  
Laser Spectroscopy ◽  
Quantum Electrodynamics ◽  
Atomic Hydrogen ◽  
Frequency Comb ◽  
Atomic Clock ◽  
Laser Frequency ◽  
High Resolution Spectroscopy ◽  
Frequency Combs

A laser frequency comb allows the phase coherent conversion of the very rapid oscillations of visible light of some 100s of THz down to frequencies that can be handled with conventional electronics. This capability has enabled the most precise laser spectroscopy experiments yet, which have allowed the testing of quantum electrodynamics, to determine fundamental constants and to construct an optical atomic clock. The chapter reviews the development of the frequency comb, derives its properties, and discusses its application for high resolution spectroscopy of atomic hydrogen.

Femtosecond Laser Frequency Combs with linewidths at the 1-Hz Level

2005 ◽  
pp. 840-842
Author(s):  
A. Bartels ◽  
S.A. Diddams ◽  
C.W. Oates ◽  
J. C. Bergquist ◽  
L. Hollberg
Keyword(s):  
Femtosecond Laser ◽  
Laser Frequency ◽  
Frequency Combs

Novel techniques for stabilizing fiber laser frequency combs

2018 ◽  
Author(s):  
Kutan Gürel ◽  
Valentin J. Wittwer ◽  
Sargis Hakobyan ◽  
Nayara Jornod ◽  
Stéphane Schilt ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Laser Frequency ◽  
Frequency Combs

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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