M. Gubin, M. Frolov, A. Kireev, Y. Korostelin, V. Kozlovskyi, Y. Podmar’kov, A. Shelkovnikov, D. Tyurikov, V. Lazarev, A. Pnev
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Cr:ZnSe laser with 0.03 Hz/Hz1/2 frequency noise for compact methane based OFS
The mid-IR cw tunable solid state Cr2+:ZnSe laser with spectral density of intrinsic frequency noise less than 30 mHz/Hz1/2 was created. The laser was applied for sub-Doppler spectroscopy of (ν1+ν4) vibrational-rotational band of methane and narrow resonances of saturated dispersion at λ = 2.36 µm were demonstrated for the first time. Characteristics of resonances and low frequency noise of the laser pave the way to a short-term frequency stability at the level of 10−15 – 10−16.
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