Sensitive Detection Of Tunable Diode Laser Absorption By Polarization Rotation

G. W. Loge; G. A. Laguna; A. Hartford

doi:10.1117/12.976140

20 November 1985 Sensitive Detection Of Tunable Diode Laser Absorption By Polarization Rotation

G. W. Loge, G. A. Laguna, A. Hartford

Proceedings Volume 0540, Southwest Conf on Optics '85; (1985) https://doi.org/10.1117/12.976140
Event: 1985 Albuquerque Conferences on Optics, 1985, Albuquerque, United States

Abstract

Results are presented demonstrating that diode laser absorption sensitivity can be increased by using the Faraday or Kerr effect to rotate the polarization of the source so that crossed polarizers can be used to reduce source noise. The Faraday effect is demonstrated using nitric oxide in a magnetic field, and the Kerr effect is demonstrated using methyl fluoride in an electric field. Some description of how absorption in an external field causes polarization rotation is presented as well as some conclusions on the types of molecules for which this technique is best suited.

Citation Download Citation

G. W. Loge, G. A. Laguna, and A. Hartford "Sensitive Detection Of Tunable Diode Laser Absorption By Polarization Rotation", Proc. SPIE 0540, Southwest Conf on Optics '85, (20 November 1985); https://doi.org/10.1117/12.976140

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