Quantitative wavelength modulation spectroscopy for gas measurements - elimination of laser intensity modulation effects

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dc.contributor.author Chakraborty, Arup Lal
dc.contributor.author Johnstone, Walter
dc.contributor.other International Conference on Fibre Optics and Photonics, PHOTONICS 2010 at IIT Guwahati
dc.coverage.spatial Guwahati, Assam, India
dc.date.accessioned 2014-04-22T16:47:30Z
dc.date.available 2014-04-22T16:47:30Z
dc.date.issued 2010-12-15
dc.identifier.citation Chakraborty, Arup Lal and Johnstone, W., "Quantitative wavelength modulation spectroscopy for gas measurements - elimination of laser intensity modulation effects", International Conference on Fibre Optics and Photonics, PHOTONICS 2010 at IIT Guwahati, December 11-15, 2010. en_US
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/1042
dc.description.abstract Quantitative tunable diode laser spectroscopy (TDLS) has established itself as a very powerful technique for the detection of gases in field applications such as industrial process control. Recent calibration-free techniques have made field measurements more robust. However, in many situations, the significant levels of laser intensity modulation gives rise to background signals that either limit detection sensitivity or distort the target signals, thereby making it difficult to extract useful information. This paper outlines the recent trends in calibration-free wavelength modulation spectroscopy (WMS) and focuses on the elimination of the undesirable effects of both linear as well as nonlinear intensity modulation. The approach is generic and should be useful with newer types of lasers that have shown significantly nonlinear power-current characteristics. en_US
dc.description.statementofresponsibility by Arup Lal Chakraborty and W. Johnstone
dc.language.iso en en_US
dc.subject Applied Mathematics en_US
dc.subject Computer Science Applications en_US
dc.subject Condensed Matter Physics en_US
dc.subject Electronic en_US
dc.subject Electrical and Electronic Engineering en_US
dc.subject Optical and Magnetic Materials en_US
dc.title Quantitative wavelength modulation spectroscopy for gas measurements - elimination of laser intensity modulation effects en_US
dc.type Article en_US


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