Optical Review

, Volume 3, Issue 4, pp 243–250

High Sensitive Detection of Trace Gases Using Optical Heterodyne Method with a High Finesse Intra-Cavity Resonator

  • Akira Mugino
  • Tomokazu Yamamoto
  • Takashige Omatsu
  • Mikhail A. Gubin
  • Atsuo Morinaga
  • Nobuo Takeuchi
QUANTUM OPTICS AND SPECTROSCOPY

DOI: 10.1007/s10043-996-0243-y

Cite this article as:
Mugino, A., Yamamoto, T., Omatsu, T. et al. OPT REV (1996) 3: 243. doi:10.1007/s10043-996-0243-y

Abstract

A novel highly sensitive method to detect the concentration of trace gas for environmental purposes is proposed. This method includes the application of frequency modulation for stabilization of laser frequency, together with optical heterodyne measurement. The shift of resonance frequency of the Fabry-Perot cavity resonator is due to the change of refractive index, accompanied by the dispersion effect due to the presence of a target gas (e.g., methane, carbon dioxide or nitrogen dioxide) inside the Fabry-Perot cavity.

Key words

frequency modulation spectroscopy (FMS) Fabry-Perot etalon high finesse dual frequency modulation (DFM) resonance mode heterodyne optical measurement trace gas concentration 

Copyright information

© The Optical Society of Japan 1996

Authors and Affiliations

  • Akira Mugino
    • 1
  • Tomokazu Yamamoto
    • 1
  • Takashige Omatsu
    • 2
  • Mikhail A. Gubin
    • 3
  • Atsuo Morinaga
    • 4
  • Nobuo Takeuchi
    • 1
  1. 1.Center for Environmental Remote SensingChiba UniversityChibaJapan
  2. 2.Department of Image ScienceChiba UniversityChibaJapan
  3. 3.P.N. Lebedev Physics InstituteRussian Academy of SciencesMoscowRussia
  4. 4.Department of PhysicsScience University of TokyoChibaJapan

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