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Optics Letters

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  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 2 — Jan. 15, 2014
  • pp: 279–282

Fiber-laser-based noise-immune cavity-enhanced optical heterodyne molecular spectrometry incorporating an optical circulator

Patrick Ehlers, Isak Silander, Junyang Wang, Aleksandra Foltynowicz, and Ove Axner  »View Author Affiliations


Optics Letters, Vol. 39, Issue 2, pp. 279-282 (2014)
http://dx.doi.org/10.1364/OL.39.000279


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Abstract

To reduce the complexity of fiber-laser-based noise-immune cavity-enhanced optical heterodyne molecular spectrometry, a system incorporating a fiber-coupled optical circulator to deflect the cavity-reflected light for laser stabilization has been realized. Detection near the shot-noise limit has been demonstrated for both Doppler-broadened and sub-Doppler signals, yielding a lowest detectable absorption and optical phase shift of 2.2×1012cm1 and 4.0×1012cm1, respectively, both for a 10 s integration time, where the former corresponds to a detection limit of C2H2 of 5 ppt.

© 2014 Optical Society of America

OCIS Codes
(060.2340) Fiber optics and optical communications : Fiber optics components
(140.3510) Lasers and laser optics : Lasers, fiber
(140.4780) Lasers and laser optics : Optical resonators
(300.6310) Spectroscopy : Spectroscopy, heterodyne
(300.6380) Spectroscopy : Spectroscopy, modulation
(230.2285) Optical devices : Fiber devices and optical amplifiers

ToC Category:
Spectroscopy

History
Original Manuscript: October 28, 2013
Revised Manuscript: November 28, 2013
Manuscript Accepted: November 29, 2013
Published: January 8, 2014

Citation
Patrick Ehlers, Isak Silander, Junyang Wang, Aleksandra Foltynowicz, and Ove Axner, "Fiber-laser-based noise-immune cavity-enhanced optical heterodyne molecular spectrometry incorporating an optical circulator," Opt. Lett. 39, 279-282 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-2-279


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