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Optical Engineering

A Tunable Semiconductor Laser for Pollution Studies
Author(s): F. L. McNamara
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Paper Abstract

Tunable semiconductor lasers have been utilized for detecting and measuring atmospheric pollutants. By adjusting the stoichiometry of the junction, one can fabricate diodes that oscillate in desired wavelength ranges. Experiments have shown that it is possible to use such lasers to detect typical pollutants, in concentrations ranging from parts per million to parts per billion, by measuring the infrared absorption spectrum of a sample.

Paper Details

Date Published: 1 February 1972
PDF: -8 pages
Opt. Eng. 11(1) doi: 10.1117/12.7971592
Published in: Optical Engineering Volume 11, Issue 1
Show Author Affiliations
F. L. McNamara, Massachusetts Institute of Technology (United States)


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