High-Resolution and Gapless Dual Comb Spectroscopy with Current-Tuned Quantum Cascade Lasers

We measured gapless, high-resolution absorption spectra spanning 55 cm −1 by simultaneous current-modulation of two quantum cascade laser frequency combs. Detector noise limited spectra were obtained in as little as 10 ms with a resolution of a few MHz.

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Bibliographic Details
Published in2020 Conference on Lasers and Electro-Optics (CLEO) Vol. 28; no. 5; pp. 1 - 2
Main Authors Gianella, Michele, Nataraj, Akshay, Tuzson, Bela, Faist, Jerome, Emmenegger, Lukas
Format Conference Proceeding Journal Article
LanguageEnglish
Published United States OSA 02.03.2020
Subjects
Absorption
Frequency modulation
Laser tuning
Measurement by laser beam
Optical sensors
Quantum cascade lasers
Spectroscopy
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Summary:We measured gapless, high-resolution absorption spectra spanning 55 cm −1 by simultaneous current-modulation of two quantum cascade laser frequency combs. Detector noise limited spectra were obtained in as little as 10 ms with a resolution of a few MHz.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.379790