Coherently-Averaged Dual-Comb Spectrometer at 7.7 µm with Master and Follower Quantum Cascade Lasers

K. Komagata; A. Shehzad; G. Terrasanta; P. Brochard; R. Matthey; M. Gianella; P. Jouy; F. Kap-salidis; M. Shahmohammadi; M. Beck; V. J. Wittwer; J. Faist; L. Emmenegger; T. Südmeyer; A. Hugi; S. Schilt

2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference
OSA Technical Digest (Optica Publishing Group, 2021),
paper cb_8_2

Coherently-Averaged Dual-Comb Spectrometer at 7.7 µm with Master and Follower Quantum Cascade Lasers

K. Komagata, A. Shehzad, G. Terrasanta, P. Brochard, R. Matthey, M. Gianella, P. Jouy, F. Kap-salidis, M. Shahmohammadi, M. Beck, V. J. Wittwer, J. Faist, L. Emmenegger, T. Südmeyer, A. Hugi, and S. Schilt

The European Conference on Lasers and Electro-Optics 2021

Munich Germany
21–25 June 2021
ISBN: 978-1-6654-1876-8

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Semiconductor-based Frequency Combs (cb_8)

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K. Komagata, A. Shehzad, G. Terrasanta, P. Brochard, R. Matthey, M. Gianella, P. Jouy, F. Kap-salidis, M. Shahmohammadi, M. Beck, V. J. Wittwer, J. Faist, L. Emmenegger, T. Südmeyer, A. Hugi, and S. Schilt, "Coherently-Averaged Dual-Comb Spectrometer at 7.7 µm with Master and Follower Quantum Cascade Lasers," in 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, OSA Technical Digest (Optica Publishing Group, 2021), paper cb_8_2.

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Abstract

We demonstrate a mid-infrared dual comb spectrometer with fully mutually-locked quantum cascade lasers frequency combs. This enables coherent averaging of the multiheterodyne beat, promising increased signal-to-noise ratio and reduced data processing for high-resolution mid-infrared spectroscopy.

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