Pulsed tunable quantum cascade laser in the spectral range of 9.6-12.5 μm
Anfimov D. R.1, Golyak Ig. S.1, Demkin P. P.1, Zadorozhny E. N.1, Vintaykin I. B.1, Morozov A. N.1, Fufurin I. L.1
1Bauman Moscow State Technical University, Moscow, Russia
Email: dimananfimov97@gmail.com

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A pulsed quantum cascade laser tunable in the spectral range of 9.6-12.5 μm is presented. The maximum pulse power is 199.8 mW, the maximum average power is 7.57 mW, the tuning step is 2 cm-1 and the spectral line width is 2 cm-1. The schematic diagram of the quantum cascade laser, the main components and their technical characteristics are described. The quantum cascade laser, a multi-pass Herriott gas cell with an optical path length of 76 m, and two mercury-cadmium-telluride thermoelectrically cooled photodetectors comprise an experimental setup intended for gas absorption infrared spectroscopy. The transmission spectra measurements of an acetone mixture at 100 ppm concentration in nitrogen are reported. Keywords: quantum cascade laser, Herriott gas cell, Littrow configuration, gas absorption spectroscopy, superlattice, quantum well.
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