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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 7 — Apr. 1, 2012
  • pp: 1265–1267

Feasibility study of Zeeman modulation spectrometry with a hollow capillary fiber based gas cell

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

Optics Letters, Vol. 37, Issue 7, pp. 1265-1267 (2012)

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For paramagnetic gases (e.g., O2, NO, NO2, OH) Zeeman modulation spectrometry is a method for spectrometric gas sensing with extraordinary selectivity. In this Letter it is combined with a hollow capillary based gas cell, where the gas is filled in long light-guiding capillary that is placed inside a toroidal coil. Over conventional Zeeman spectrometry this has the advantage of lower power consumption at long optical path length, since several loops of the hollow capillary fiber can be placed in the coil. Compared to wavelength modulation spectrometry the advantage is insensitivity to interference by multimode propagation in the fiber and absorption by other nonparamagnetic gases, which should enhance both sensor stability and sensitivity. Experimental and theoretical results are presented, showing the feasibility of the approach.

© 2012 Optical Society of America

OCIS Codes
(300.6260) Spectroscopy : Spectroscopy, diode lasers
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:

Original Manuscript: November 7, 2011
Revised Manuscript: February 20, 2012
Manuscript Accepted: February 20, 2012
Published: March 30, 2012

Andreas Hangauer, Jia Chen, Rainer Strzoda, and Markus-Christian Amann, "Feasibility study of Zeeman modulation spectrometry with a hollow capillary fiber based gas cell," Opt. Lett. 37, 1265-1267 (2012)

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