Fibre lasers for near-IR gas spectroscopy

George Stewart; Gillian Whitenett; Joanna Marshall; Brian Culshaw

doi:10.1117/12.566794

9 June 2004 Fibre lasers for near-IR gas spectroscopy

George Stewart, Gillian Whitenett, Joanna Marshall, Brian Culshaw

Proceedings Volume 5502, Second European Workshop on Optical Fibre Sensors; (2004) https://doi.org/10.1117/12.566794
Event: Second European Workshop on Optical Fibre Sensors, 2004, Santander, Spain

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.

Citation Download Citation

George Stewart, Gillian Whitenett, Joanna Marshall, and Brian Culshaw "Fibre lasers for near-IR gas spectroscopy", Proc. SPIE 5502, Second European Workshop on Optical Fibre Sensors, (9 June 2004); https://doi.org/10.1117/12.566794

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