Coherent mid-infrared dual-comb spectroscopy enabled by optical injection locking of quantum cascade laser frequency combs

Johannes Hillbrand; Mathieu Bertrand; Filippos Kapsalidis; Mattias Beck; Jérôme Faist

2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference
OSA Technical Digest (Optica Publishing Group, 2021),
paper ed_2_1

Coherent mid-infrared dual-comb spectroscopy enabled by optical injection locking of quantum cascade laser frequency combs

Johannes Hillbrand, Mathieu Bertrand, Filippos Kapsalidis, Mattias Beck, and Jérôme Faist

European Quantum Electronics Conference 2021

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

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J. Hillbrand, M. Bertrand, F. Kapsalidis, M. Beck, and J. Faist, "Coherent mid-infrared dual-comb spectroscopy enabled by optical injection locking of quantum cascade laser frequency combs," in 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, OSA Technical Digest (Optica Publishing Group, 2021), paper ed_2_1.

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Abstract

We investigate optical injection locking of the offset frequency of QCL frequency combs to a single-mode QCL. When both combs are locked, the dual-comb beating consists of a harmonic series of lines with resolution-limited linewidth.

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