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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry Van Driel
  • Vol. 26, Iss. 7 — Jul. 1, 2009
  • pp: 1384–1394

Wavelength-modulated noise-immune cavity-enhanced optical heterodyne molecular spectroscopy signal line shapes in the Doppler limit

Aleksandra Foltynowicz, Weiguang Ma, Florian M. Schmidt, and Ove Axner  »View Author Affiliations


JOSA B, Vol. 26, Issue 7, pp. 1384-1394 (2009)
http://dx.doi.org/10.1364/JOSAB.26.001384


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Abstract

A thorough analysis of the shape and strength of Doppler-broadened wavelength-modulated noise-immune cavity-enhanced optical heterodyne molecular spectroscopy signals is presented, and their dependence on modulation frequency, modulation amplitude, and detection phase is investigated in detail. The conditions that maximize the on-resonance signal are identified. The analysis is based on standard frequency modulation spectroscopy formalism and the Fourier description of wavelength modulation spectroscopy and is verified by fits to experimental signals from C 2 H 2 and C O 2 measured at 1531 nm . In addition, the line strengths of two C O 2 transitions in the ν 2 3 ν 1 + ν 2 + ν 3 hot band [ P e ( 7 ) and P e ( 9 ) ] were found to differ by 20 % from those given in the HITRAN database.

© 2009 Optical Society of America

OCIS Codes
(020.3690) Atomic and molecular physics : Line shapes and shifts
(300.1030) Spectroscopy : Absorption
(300.6310) Spectroscopy : Spectroscopy, heterodyne
(300.6390) Spectroscopy : Spectroscopy, molecular

ToC Category:
Spectroscopy

History
Original Manuscript: December 22, 2008
Revised Manuscript: March 30, 2009
Manuscript Accepted: May 1, 2009
Published: June 19, 2009

Citation
Aleksandra Foltynowicz, Weiguang Ma, Florian M. Schmidt, and Ove Axner, "Wavelength-modulated noise-immune cavity-enhanced optical heterodyne molecular spectroscopy signal line shapes in the Doppler limit," J. Opt. Soc. Am. B 26, 1384-1394 (2009)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-26-7-1384

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