Vol. 2, issue 11, article # 8

pdf Babin A. A., Karov A. V., Fel'dshtein F. I., Freidman G. I. Spectrometer for nonlinear Spectroscopy of molecular Gases in the nearIR. // Atmospheric and oceanic optics. 1989. V. 2. No. 11. P. 992-995.
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A spectrometer for the near IR with resolution not worse than 0.05 cm is built based on an optical parametric oscillator (OPO). The spectrometer uses a LiIO crystal with a transmission band up to 3.7 mm; its frequency tuning is performed automatically (the tuning region is determined by the resonator mirrors); in the 1.7-2.3 mm band it provides an output pulse energy of up to 30 mJ at a repetition rate of 0.2-0.5 Hz. The absorption of powerful IR radiation by molecular NH is studied using this spectrometer.


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