Terahertz Spectroscopy of Gas Mixtures with Dual Quantum Cascade Laser Frequency Combs

Lukasz A. Sterczewski; Jonas Westberg; Yang Yang; David Burghoff; John Reno; Qing Hu; Gerard Wysocki

doi:10.1021/acsphotonics.9b01758

Terahertz Spectroscopy of Gas Mixtures with Dual Quantum Cascade Laser Frequency Combs

Lukasz A. Sterczewski, Jonas Westberg, Yang Yang, David Burghoff, John Reno, Qing Hu, Gerard Wysocki

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

Terahertz laser frequency combs based on quantum cascade lasers provide coherent, broadband, electrically pumped, THz radiation sources for use in future spectroscopic applications. Here, we explore the feasibility of such lasers in a dual-comb spectroscopy configuration for the detection of multiple molecular samples in the gas phase. The lasers span approximately 180 GHz of optical bandwidth, centered at 3.4 THz, with submilliwatt total optical power. One of the main advantages of dual-comb spectroscopy is its high speed, which opens up the possibility for direct observations of chemical reaction dynamics in the terahertz spectral region. As a proof-of-concept, we recorded continuously evolving spectra from gas mixtures with 1 ms temporal resolution.

Original language	English (US)
Pages (from-to)	1082-1087
Number of pages	6
Journal	ACS Photonics
Volume	7
Issue number	5
DOIs	https://doi.org/10.1021/acsphotonics.9b01758
State	Published - May 20 2020

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Biotechnology
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

Keywords

dual-comb spectroscopy
frequency comb
multispecies
quantum cascade laser
real-time
terahertz

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10.1021/acsphotonics.9b01758

Cite this

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abstract = "Terahertz laser frequency combs based on quantum cascade lasers provide coherent, broadband, electrically pumped, THz radiation sources for use in future spectroscopic applications. Here, we explore the feasibility of such lasers in a dual-comb spectroscopy configuration for the detection of multiple molecular samples in the gas phase. The lasers span approximately 180 GHz of optical bandwidth, centered at 3.4 THz, with submilliwatt total optical power. One of the main advantages of dual-comb spectroscopy is its high speed, which opens up the possibility for direct observations of chemical reaction dynamics in the terahertz spectral region. As a proof-of-concept, we recorded continuously evolving spectra from gas mixtures with 1 ms temporal resolution.",

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AU - Sterczewski, Lukasz A.

AU - Westberg, Jonas

AU - Yang, Yang

AU - Burghoff, David

AU - Reno, John

AU - Hu, Qing

AU - Wysocki, Gerard

PY - 2020/5/20

Y1 - 2020/5/20

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AB - Terahertz laser frequency combs based on quantum cascade lasers provide coherent, broadband, electrically pumped, THz radiation sources for use in future spectroscopic applications. Here, we explore the feasibility of such lasers in a dual-comb spectroscopy configuration for the detection of multiple molecular samples in the gas phase. The lasers span approximately 180 GHz of optical bandwidth, centered at 3.4 THz, with submilliwatt total optical power. One of the main advantages of dual-comb spectroscopy is its high speed, which opens up the possibility for direct observations of chemical reaction dynamics in the terahertz spectral region. As a proof-of-concept, we recorded continuously evolving spectra from gas mixtures with 1 ms temporal resolution.

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Terahertz Spectroscopy of Gas Mixtures with Dual Quantum Cascade Laser Frequency Combs

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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