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>

scholarly journals Optical Frequency Comb Generation based on Erbium Fiber Lasers

Nanophotonics ◽  
2016 ◽  
Vol 5 (2) ◽  
pp. 196-213 ◽  
Author(s):  
Stefan Droste ◽  
Gabriel Ycas ◽  
Brian R. Washburn ◽  
Ian Coddington ◽  
Nathan R. Newbury
Keyword(s):  
Frequency Comb ◽  
Building Blocks ◽  
Laser Frequency ◽  
Optical Frequency ◽  
Laser Amplifier ◽  
Optical Frequency Combs ◽  
Frequency Combs ◽  
Comb Generation ◽  
Optical Frequency Metrology ◽  
Frequency Metrology

AbstractOptical frequency combs have revolutionized optical frequency metrology and are being actively investigated in a number of applications outside of pure optical frequency metrology. For reasons of cost, robustness, performance, and flexibility, the erbium fiber laser frequency comb has emerged as the most commonly used frequency comb system and many different designs of erbium fiber frequency combs have been demonstrated. We review the different approaches taken in the design of erbium fiber frequency combs, including the major building blocks of the underlying mode-locked laser, amplifier, supercontinuum generation and actuators for stabilization of the frequency comb.

Fiber-based laser frequency combs

2012 ◽  
Vol 60 (4) ◽  
pp. 697-706 ◽  
Author(s):  
G. Soboń ◽  
K.M. Abramski
Keyword(s):  
Laser Physics ◽  
Fiber Lasers ◽  
Frequency Comb ◽  
Laser Frequency ◽  
Optical Frequency Comb ◽  
Optical Frequency ◽  
Optical Frequency Combs ◽  
Frequency Combs

Abstract For the last decade a very attractive field of laser physics, namely the optical frequency comb technique, has been intensively developed. Fiber lasers play particular role in that area. The motivation of their development is obtaining broadband comb systems with well-defined and stable mods (comb teeth). This paper presents a basic overview devoted to the fiber-based optical frequency combs.

Multi-Channel Harmonic Frequency Comb Covering the Mid-Infrared Molecular Fingerprint Region

2018 ◽  
Author(s):  
Christian Gaida ◽  
Tobias Heuermann ◽  
Martin Gebhardt ◽  
Thomas Butler ◽  
Daniel Gerz ◽  
...  
Keyword(s):  
Frequency Comb ◽  
Harmonic Frequency ◽  
Molecular Fingerprint ◽  
Mid Infrared ◽  
Fingerprint Region

scholarly journals Gain-through-filtering enables tuneable frequency comb generation in passive optical resonators

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Florent Bessin ◽  
Auro M. Perego ◽  
Kestutis Staliunas ◽  
Sergei K. Turitsyn ◽  
Alexandre Kudlinski ◽  
...  
Keyword(s):  
Frequency Comb ◽  
Laser Frequency ◽  
Optical Resonators ◽  
Experimental Result ◽  
Molecular Fingerprinting ◽  
Optical Frequency Combs ◽  
Frequency Combs ◽  
Elegant Method ◽  
A New Technique ◽  
Comb Generation

Abstract Optical frequency combs (OFCs), consisting of a set of phase-locked, equally spaced laser frequency lines, have enabled a great leap in precision spectroscopy and metrology since seminal works of Hänsch et al. Nowadays, OFCs are cornerstones of a wealth of further applications ranging from chemistry and biology to astrophysics and including molecular fingerprinting and light detection and ranging (LIDAR) systems, among others. Driven passive optical resonators constitute the ideal platform for OFC generation in terms of compactness and low energy footprint. We propose here a technique for the generation of OFCs with a tuneable repetition rate in externally driven optical resonators based on the gain-through-filtering process, a simple and elegant method, due to asymmetric spectral filtering on one side of the pump wave. We demonstrate a proof-of-concept experimental result in a fibre resonator, pioneering a new technique that does not require specific engineering of the resonator dispersion to generate frequency-agile OFCs.

scholarly journals Mid-infrared optical frequency combs based on difference frequency generation for molecular spectroscopy

2015 ◽  
Vol 23 (20) ◽  
pp. 26814 ◽  
Author(s):  
Flavio C. Cruz ◽  
Daniel L. Maser ◽  
Todd Johnson ◽  
Gabriel Ycas ◽  
Andrew Klose ◽  
...  
Keyword(s):  
Molecular Spectroscopy ◽  
Difference Frequency Generation ◽  
Difference Frequency ◽  
Optical Frequency ◽  
Mid Infrared ◽  
Optical Frequency Combs ◽  
Frequency Combs ◽  
Frequency Generation

scholarly journals A broadband chip-scale optical frequency synthesizer at 2.7 × 10−16 relative uncertainty

2016 ◽  
Vol 2 (4) ◽  
pp. e1501489 ◽  
Author(s):  
Shu-Wei Huang ◽  
Jinghui Yang ◽  
Mingbin Yu ◽  
Bart H. McGuyer ◽  
Dim-Lee Kwong ◽  
...  
Keyword(s):  
Solid State ◽  
Degrees Of Freedom ◽  
Frequency Synthesizer ◽  
Frequency Comb ◽  
Laser Frequency ◽  
Optical Frequency ◽  
Light Sources ◽  
Precision Spectroscopy ◽  
Optical Frequency Combs ◽  
Frequency Combs

Optical frequency combs—coherent light sources that connect optical frequencies with microwave oscillations—have become the enabling tool for precision spectroscopy, optical clockwork, and attosecond physics over the past decades. Current benchmark systems are self-referenced femtosecond mode-locked lasers, but Kerr nonlinear dynamics in high-Q solid-state microresonators has recently demonstrated promising features as alternative platforms. The advance not only fosters studies of chip-scale frequency metrology but also extends the realm of optical frequency combs. We report the full stabilization of chip-scale optical frequency combs. The microcomb’s two degrees of freedom, one of the comb lines and the native 18-GHz comb spacing, are simultaneously phase-locked to known optical and microwave references. Active comb spacing stabilization improves long-term stability by six orders of magnitude, reaching a record instrument-limited residual instability of 3.6mHz/τ. Comparing 46 nitride frequency comb lines with a fiber laser frequency comb, we demonstrate the unprecedented microcomb tooth-to-tooth relative frequency uncertainty down to 50 mHz and 2.7 × 10−16, heralding novel solid-state applications in precision spectroscopy, coherent communications, and astronomical spectrography.

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
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