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Applied Optics

Applied Optics


  • Vol. 24, Iss. 2 — Jan. 15, 1985
  • pp: 247–253

Harmonic saturated spectroscopy applied to molecular photoacoustic detection

Charles M. Klimcak and Jerry A. Gelbwachs  »View Author Affiliations

Applied Optics, Vol. 24, Issue 2, pp. 247-253 (1985)

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The feasibility of the application of harmonic saturated spectroscopy to molecular detection in the infrared regime was investigated. Experimental measurements using SF6 as a model gas were performed with a CO2 laser photoacoustic molecular vapor detector operating in the 9–11-μm portion of the infrared regime. These experiments demonstrated the negligible loss of absolute sensitivity, the maintenance of a characteristic readily identifiable absorption profile, and the ability to scale with laser intensity in the proper conditions. Our work demonstrates the importance of a laser modulation waveform that is completely devoid of spatial asymmetries for the realization of the full potential of this method.

© 1985 Optical Society of America

Original Manuscript: July 16, 1984
Published: January 15, 1985

Charles M. Klimcak and Jerry A. Gelbwachs, "Harmonic saturated spectroscopy applied to molecular photoacoustic detection," Appl. Opt. 24, 247-253 (1985)

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