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Applied Optics

Applied Optics


  • Vol. 37, Iss. 12 — Apr. 20, 1998
  • pp: 2502–2504

Frequency modulation spectroscopy with a tunable CO2 sideband laser: ozone detection

Kambiz Shahnazi  »View Author Affiliations

Applied Optics, Vol. 37, Issue 12, pp. 2502-2504 (1998)

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The unblended ozone line at 1044.533 cm-1 was acquired by using the frequency modulation technique. A tunable CO2 sideband laser with a GaAs waveguide modulator with a tuning bandwidth of 20 GHz in the mid-infrared region was used for this method. With this technique, a second sideband at 1-MHz frequency with a peak-to-peak amplitude of 1 V was imposed on the first tunable sideband. The signal was passed through a 1-m cell and collected with an EG&G detector. The signal-to-noise ratio obtained was approximately 100:1.

© 1998 Optical Society of America

OCIS Codes
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(140.3470) Lasers and laser optics : Lasers, carbon dioxide
(300.0300) Spectroscopy : Spectroscopy
(300.6380) Spectroscopy : Spectroscopy, modulation

Original Manuscript: July 18, 1997
Revised Manuscript: January 9, 1998
Published: April 20, 1998

Kambiz Shahnazi, "Frequency modulation spectroscopy with a tunable CO2 sideband laser: ozone detection," Appl. Opt. 37, 2502-2504 (1998)

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