Registration pollution of water by method of modulation intracavity laser spectroscopy

Details Registration pollution of water by method of modulation intracavity laser spectroscopy Registration pollution of water by method of modulation intracavity laser spectroscopy

Publishing date

Sep 1995

URL

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995spie.2503...55b&link_type=abstract

Journals

Proc. SPIE Vol. 2503, p. 55-58, Air Toxics and Water Monitoring, George M. Russwurm; Ed.

Science

Physics

Type

Scientific paper

Abstract

In this work, the method of the modulation intracavity laser spectroscopy is shown to be candidate for investigation and quantitative analysis of organic pollutions in water. The test specimen is placed into the cavity of the multimode dye laser. When the Raman scattering line coincides with amplification spectrum of the active medium of the multimode laser the additional gain appears at the Stokes frequency. One can experimentally determine this gain and then determine concentration of pollution. Spectral width of the Raman lines are small (approximately 3 cm-1), therefore a number of organic pollutions may be observed simultaneously. We have investigated stimulated Raman scattering from molecules of peridin (C5H5N) in water. In our conditions concentration sensitivity was 7 IO-4M/1.

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