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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 2 — Jan. 10, 2009
  • pp: 401–407

Harmonic wavelet analysis of modulated tunable diode laser absorption spectroscopy signals

Hong Duan, Anish Gautam, Benjamin D. Shaw, and Harry H. Cheng  »View Author Affiliations


Applied Optics, Vol. 48, Issue 2, pp. 401-407 (2009)
http://dx.doi.org/10.1364/AO.48.000401


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Abstract

Wavelet analyses of tunable diode laser absorption spectroscopy signals were performed. The absorption spectroscopy data were obtained by repeatedly scanning the beams from a tunable diode laser operating in the near infrared across absorption lines of gaseous NH 3 contained within a windowed glass tube. The laser was modulated and wavelet analyses of the absorption data were performed. It was observed that harmonic wavelets could simultaneously extract the 1 f and 2 f harmonics as well as higher-order harmonics from the direct absorption data.

© 2009 Optical Society of America

OCIS Codes
(300.6260) Spectroscopy : Spectroscopy, diode lasers
(350.6980) Other areas of optics : Transforms

ToC Category:
Spectroscopy

History
Original Manuscript: August 22, 2008
Revised Manuscript: December 4, 2008
Manuscript Accepted: December 5, 2008
Published: January 9, 2009

Citation
Hong Duan, Anish Gautam, Benjamin D. Shaw, and Harry H. Cheng, "Harmonic wavelet analysis of modulated tunable diode laser absorption spectroscopy signals," Appl. Opt. 48, 401-407 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-2-401


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