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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 21 — Nov. 1, 2010
  • pp: 3577–3579

Low-level and ultralow-volume hollow waveguide based carbon monoxide sensor

Jia Chen, Andreas Hangauer, Rainer Strzoda, Maximilian Fleischer, and Markus-Christian Amann  »View Author Affiliations

Optics Letters, Vol. 35, Issue 21, pp. 3577-3579 (2010)

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We demonstrate an ultralow sample volume optical carbon monoxide sensor with detection sensitivity of 180 parts in 10 9 ( 1 σ at 1 Hz ). The utilization of a 2.3 μm surface-emitting laser directly coupled to a 3 m hollow capillary fiber as the gas cell is proven to be a compact, sensitive, and cost-efficient gas sensing concept. By mechanical vibration of the fiber, an absorbance resolution of 10 5 is achieved, which is comparable to single-reflective (double-pass) cells. An improvement of sensitivity over the conventional single-reflective cell is thus approximately linearly scaled with the enhancement of the optical path length, which is usually more than 1 order of magnitude.

© 2010 Optical Society of America

OCIS Codes
(060.2340) Fiber optics and optical communications : Fiber optics components
(230.7370) Optical devices : Waveguides
(300.1030) Spectroscopy : Absorption
(300.6260) Spectroscopy : Spectroscopy, diode lasers
(280.1545) Remote sensing and sensors : Chemical analysis
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:

Original Manuscript: July 20, 2010
Manuscript Accepted: August 26, 2010
Published: October 21, 2010

Jia Chen, Andreas Hangauer, Rainer Strzoda, Maximilian Fleischer, and Markus-Christian Amann, "Low-level and ultralow-volume hollow waveguide based carbon monoxide sensor," Opt. Lett. 35, 3577-3579 (2010)

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