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...

Diode laser spectroscopy using a calibration free phasor decomposition approach to RAM nulling

Ruxton, Keith C. and Chakraborty, Arup Lal and McGettrick, A.J. and Duffin, K. and Johnstone, W. and Stewart, G. (2009) Diode laser spectroscopy using a calibration free phasor decomposition approach to RAM nulling. In: 7th International Conference on Tunable Diode Laser Spectroscopy, 2009-07-13 - 2009-07-17.

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

Abstract

Tunable diode laser spectroscopy (TDLS) detection schemes have been widely investigated [1,2] in the near-IR due to the presence of overtone absorption lines in the species of interest and the availability of lasers which operate in the region. However, overtone lines are much weaker than their fundamental absorption line counterparts which, for many species, lie in the Mid-IR. Traditionally the 3-5μm wavelength region has been addressed by lead-salt lasers, but this technology does not lend itself easily to the implementation of TDLS modulation schemes. This paper presents an investigation of TDLS measurements using a system based on difference frequency generation (DFG), in periodically poled lithium niobate (PPLN), which has been used to address fundamental absorption lines of methane (CH4) in the 3.4μm region.