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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 24 — Dec. 15, 2009
  • pp: 3767–3769

Tunable-diode-laser spectroscopy of C 2 H 2 using a 3.03 μ m Ga In As Sb Al Ga In As Sb distributed-feedback laser

Pawel Kluczynski, Stefan Lundqvist, Sofiane Belahsene, and Yves Rouillard  »View Author Affiliations

Optics Letters, Vol. 34, Issue 24, pp. 3767-3769 (2009)

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The mid-IR region beyond 3 μ m is very attractive for gas sensing, since the fundamental absorption bands of several hydrocarbons are located in this range. We demonstrated, for the first time to our knowledge, the use of a novel Ga In As Sb Al Ga In As Sb distributed-feedback laser emitting around 3.03 μ m in a tunable-diode laser-spectroscopy application. The laser operates in continuous mode at room temperature with excellent single-mode and tuning properties. A comparison of the measurement results was made with the recently updated data on C 2 12 H 2 found in the HITRAN 2008 compilation. A good agreement was found between the measurements and the database. Wavelength modulation spectroscopy of acetylene at ambient conditions was made, and a sensitivity of 18 ppb (parts per billion) per meter at an integration time of 3 s corresponding to a relative absorption of 5 × 10 6 was obtained. The optimum detection limit of the acetylene measurement in this wavelength modulation spectroscopy setup was better than 1.5 ppb m at an integration time of 600  seconds .

© 2009 Optical Society of America

OCIS Codes
(280.3420) Remote sensing and sensors : Laser sensors
(300.1030) Spectroscopy : Absorption
(300.6260) Spectroscopy : Spectroscopy, diode lasers
(300.6340) Spectroscopy : Spectroscopy, infrared
(300.6380) Spectroscopy : Spectroscopy, modulation

ToC Category:

Original Manuscript: September 30, 2009
Revised Manuscript: November 5, 2009
Manuscript Accepted: November 5, 2009
Published: December 1, 2009

Pawel Kluczynski, Stefan Lundqvist, Sofiane Belahsene, and Yves Rouillard, "Tunable-diode-laser spectroscopy of C2H2 using a 3.03 μm GaInAsSb/AlGaInAsSb distributed-feedback laser," Opt. Lett. 34, 3767-3769 (2009)

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