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Proceedings Paper

Fibre lasers for near-IR gas spectroscopy
Author(s): George Stewart; Gillian Whitenett; Joanna Marshall; Brian Culshaw
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Paper Abstract

We discuss the potential advantages of fiber lasers as sources for gas sensors in the near infrared. A number of challenges need to be met, particularly in regard to stable tuning, application of high sensitivity detection techniques and operation over an extended range of wavelength. Conventional loop cavities suffer from instabilities due to mode hopping and polarization drift. Some of these problems may be addressed through an alternative configuration using a short, polarization-maintaining cavity and a Faraday rotator mirror (the sigma fiber laser). Initial experiments conducted on the sigma fiber laser have investigated the gain that can be achieved through double pass operation as compared with the prediction of a theoretical model which takes into account the effects of amplified spontaneous emission. Several fiber laser designs are proposed for potential application to gas spectroscopy systems.

Paper Details

Date Published: 9 June 2004
PDF: 5 pages
Proc. SPIE 5502, Second European Workshop on Optical Fibre Sensors, (9 June 2004); doi: 10.1117/12.566794
Show Author Affiliations
George Stewart, Univ. of Strathclyde (United Kingdom)
Gillian Whitenett, Univ. of Strathclyde (United Kingdom)
Joanna Marshall, Univ. of Strathclyde (United Kingdom)
Brian Culshaw, Univ. of Strathclyde (United Kingdom)


Published in SPIE Proceedings Vol. 5502:
Second European Workshop on Optical Fibre Sensors
Jose Miguel Lopez-Higuera; Brian Culshaw, Editor(s)

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