Picture of smart phone in human hand

World leading smartphone and mobile technology research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by Strathclyde researchers from the Department of Computer & Information Sciences involved in researching exciting new applications for mobile and smartphone technology. But the transformative application of mobile technologies is also the focus of research within disciplines as diverse as Electronic & Electrical Engineering, Marketing, Human Resource Management and Biomedical Enginering, among others.

Explore Strathclyde's Open Access research on smartphone technology now...

Fibre lasers for near-IR gas spectroscopy

Stewart, G. and Whitenett, G.L. and Marshall, J. and Culshaw, B. (2004) Fibre lasers for near-IR gas spectroscopy. In: 2nd European Workshop on Optical Fibre Sensors, 2004-06-09 - 2004-06-11.

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

We discuss the potential advantages of fibre lasers as sources for gas sensors in the near infrared. A number of challenges need to be met, particularly in regard to stable timing, 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 polarisation drift. Some of these problems may be addressed through an alternative configuration using a short, polarisation-maintaining cavity and a Faraday rotator mirror (the sigma fibre laser). Initial experiments conducted on the sigma fibre 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 fibre laser designs are proposed for potential application to gas spectroscopy systems.