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Proceedings Paper

Cavity ring-down spectroscopy with diode array
Author(s): Igor V. Nikolaev; Vladimir N. Ochkin; Maxim V. Spiridonov; Sergei N. Tskhai
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Paper 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.

Paper Details

Date Published: 13 December 2006
PDF: 6 pages
Proc. SPIE 6580, 15th Symposium on High-Resolution Molecular Spectroscopy, 65800M (13 December 2006); doi: 10.1117/12.724935
Show Author Affiliations
Igor V. Nikolaev, P.N. Lebedev Physical Institute (Russia)
Vladimir N. Ochkin, P.N. Lebedev Physical Institute (Russia)
Maxim V. Spiridonov, P.N. Lebedev Physical Institute (Russia)
Sergei N. Tskhai, P.N. Lebedev Physical Institute (Russia)

Published in SPIE Proceedings Vol. 6580:
15th Symposium on High-Resolution Molecular Spectroscopy

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