Cavity ring-down spectroscopy with diode array

Igor V. Nikolaev; Vladimir N. Ochkin; Maxim V. Spiridonov; Sergei N. Tskhai

doi:10.1117/12.724935

13 December 2006 Cavity ring-down spectroscopy with diode array

Igor V. Nikolaev, Vladimir N. Ochkin, Maxim V. Spiridonov, Sergei N. Tskhai

Proceedings Volume 6580, 15th Symposium on High-Resolution Molecular Spectroscopy; 65800M (2006) https://doi.org/10.1117/12.724935
Event: 15th Symposium on High-Resolution Molecular Spectroscopy, 2006, Nizhny Novgorod, Russian Federation

Abstract

A cavity ring-down spectroscopy with off-axis multipass cell and space separated detectors is suggested to record absorption spectrum without modulation of the diode laser intensity. The spectral resolution is ~0.0003 cm^-1. The whole spectrum is obtained for a one continuous tuning of the laser frequency for ~20 ms. Apart from conventional CRDS a really needed rise time of the detectors are 1000 times slower. The recording of the whole spectrum for a one measurement give an additional possibilities of signal extraction at relatively high noise. The technique is applied to absorption measurement of NO2 in atmosphere.

Citation Download Citation

Igor V. Nikolaev, Vladimir N. Ochkin, Maxim V. Spiridonov, and Sergei N. Tskhai "Cavity ring-down spectroscopy with diode array", Proc. SPIE 6580, 15th Symposium on High-Resolution Molecular Spectroscopy, 65800M (13 December 2006); https://doi.org/10.1117/12.724935

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