Coherently-Averaged Dual-Comb Spectrometer at 7.7 µm with Master and Follower Quantum Cascade Lasers
Abstract
Mid-infrared (MIR) quantum cascade laser (QCL) frequency combs are an appealing technology for dual-comb spectroscopy as they cover strong absorption bands of many relevant molecules in the MIR region and enable measurements with sub-microsecond time-resolution permitting novel insights into dynamical processes [1] . The comb properties can be directly controlled through the QCL driving current, the chip temperature or by electrical injection of the repetition frequency [2] . Nevertheless, full mutual stabilization of a QCL dual-comb spectrometer (DCS) has not yet been reported. In this work, we demonstrate a DCS with full mutual stabilization in a master-follower (MF) scheme (also known as master-slave) and the coherent averaging of its signal. Show more
Publication status
publishedExternal links
Book title
2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)Pages / Article No.
Publisher
IEEEEvent
Organisational unit
03759 - Faist, Jérôme / Faist, Jérôme
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