Tunable-diode-laser-based one-component instrument for open-path      measurements of trace concentrations of atmospheric gases

Andrian I. Kouznetsov; Alexander I. Nadezhdinskii; Eugene V. Stepanov; M. A. Bloch

doi:10.1117/12.140223

12 February 1993 Tunable diode laser based, one component instrument for open path measurements of trace concentrations of atmospheric gases

Andrian I. Kouznetsov, Alexander I. Nadezhdinskii, Eugene V. Stepanov, M. A. Bloch

Author Affiliations +

Proceedings Volume 1715, Optical Methods in Atmospheric Chemistry; (1993) https://doi.org/10.1117/12.140223
Event: Environmental Sensing '92, 1992, Berlin, Germany

Abstract

A simple tunable diode laser based system for routine monitoring of concentrations of atmospheric gases was developed. The instrument operation is based on a PbSnSe diode laser emitting radiation at about 4.7 microns, and InSb photodiodes. Usually, the laser operates in multimode regime with an optical power of about 0.1 mW in the mode. The system consists of the emitter-receiver unit (including optical elements and a cryostat with liquid nitrogen, which contains the diode laser and two InSb photodetectors) and the retroreflector. The instrument has two limitations: (1) the gas should have absorption lines within the mid-IR spectral region (4-8 microns) and (2) the gas should be stable enough while in the instrument's cell to allow periodic calibration of the instument. The instrument, which in the manufacturing stage, is presently used for carbon monoxide monitoring.

Citation Download Citation

Andrian I. Kouznetsov, Alexander I. Nadezhdinskii, Eugene V. Stepanov, and M. A. Bloch "Tunable diode laser based, one component instrument for open path measurements of trace concentrations of atmospheric gases", Proc. SPIE 1715, Optical Methods in Atmospheric Chemistry, (12 February 1993); https://doi.org/10.1117/12.140223

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