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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 38, Iss. 14 — Jul. 15, 2013
  • pp: 2475–2477

Linear cavity optical-feedback cavity-enhanced absorption spectroscopy with a quantum cascade laser

A. G. V. Bergin, G. Hancock, G. A. D. Ritchie, and D. Weidmann  »View Author Affiliations


Optics Letters, Vol. 38, Issue 14, pp. 2475-2477 (2013)
http://dx.doi.org/10.1364/OL.38.002475


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Abstract

A cw distributed feedback quantum cascade laser (DFB-QCL) coupled to a two-mirror linear optical cavity has been used to successfully demonstrate optical-feedback cavity-enhanced absorption spectroscopy (OF-CEAS) at 5.5 μm. The noise-equivalent absorption coefficient, αmin, was 2.4×108cm1 for 1 s averaging, limited by etalon-fringing. The temporal stability of the instrument allows NO detection down to 5 ppb in 2 s.

© 2013 Optical Society of America

OCIS Codes
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(140.4780) Lasers and laser optics : Optical resonators
(140.5965) Lasers and laser optics : Semiconductor lasers, quantum cascade

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: March 11, 2013
Revised Manuscript: May 22, 2013
Manuscript Accepted: June 11, 2013
Published: July 9, 2013

Citation
A. G. V. Bergin, G. Hancock, G. A. D. Ritchie, and D. Weidmann, "Linear cavity optical-feedback cavity-enhanced absorption spectroscopy with a quantum cascade laser," Opt. Lett. 38, 2475-2477 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-14-2475


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