Abstract:
Solid-state cw Cr2+ : ZnSe laser has been used for Doppler-free spectroscopy of lines of the vibrational — rotational v1 + v4 band of methane. Saturated-dispersion resonances on the components of the R(2) line near λ = 2.36 mm are revealed. The parameters of the saturated-dispersion resonance obtained upon cooling intracavity methane cell to a temperature of 77 K confirmed good prospects of developing an optical master oscillator with a high (10-15 — 10-16) short-term frequency stability based on a Cr2+ : ZnSe/CH4 laser.
Keywords:Cr2+ : ZnSe laser, IR lasers, tunable lasers, solid-state lasers, two-mode lasers, optical frequency standards, Doppler-free resonances, laser spectroscopy.