New Techniques For Sensitive Detection: Spatially Resolved Absorption And Multiphoton Optogalvanic Spectroscopies

J.E. M. Goldsmith

doi:10.1117/12.936251

19 October 1983 New Techniques For Sensitive Detection: Spatially Resolved Absorption And Multiphoton Optogalvanic Spectroscopies

J.E. M. Goldsmith

Author Affiliations +

Proceedings Volume 0426, Laser-Based Ultrasensitive Spectroscopy and Detection V; (1983) https://doi.org/10.1117/12.936251
Event: 27th Annual Technical Symposium, 1983, San Diego, United States

Abstract

Several new laser-based detection methods for use in combustion diagnostics are described. Spatially resolved saturated absorption spectroscopy and optical Stark modulation spectroscopy provide two techniques for obtaining point resolution in absorption measurements; these methods are demonstrated in studies of atomic sodium aspirated into a flame. Resonant multiphoton optogalvanic spectroscopy can be used to observe radicals in flames that are extremely difficult to detect with conventional optical techniques; studies of atomic hydrogen and atomic oxygen in flames are presented.

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J.E. M. Goldsmith "New Techniques For Sensitive Detection: Spatially Resolved Absorption And Multiphoton Optogalvanic Spectroscopies", Proc. SPIE 0426, Laser-Based Ultrasensitive Spectroscopy and Detection V, (19 October 1983); https://doi.org/10.1117/12.936251

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