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