Thesis

The application of quantum cascade lasers to mid-infrared gas sensing

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Awarding institution
  • University of Strathclyde
Date of award
  • 2011
Thesis identifier
  • T12823
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Department, School or Faculty
Abstract
  • This thesis explains the development of a quantum cascade laser based gas sensor and the verification of performance of the resulting product. The capability to detect trace levels of multiple species in varying physical conditions, specifically high temperature is shown.Optical designs capable of allowing the measurement technique to be used in a variety of applications have been developed, specifically multi-pass gas absorption cells. The accurate, precise and high speed analysis of the resulting data is made possible by spectral analysis algorithms. These developments and techniques were then applied to high temperature spectroscopic measurements. Spectra recorded at Rutherford Appleton Laboratory were used to calibrate high temperature measurements. The performance of the technology was thoroughly tested at the National Physical Laboratory. The resulting sensors have since been used to study the exhaust gases produced by a variety engine types ranging from cars to ships as well as atmospheric measurements.
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Note
  • This thesis was previously held under moratorium from 8th August 2011 until 8th August 2016.
DOI
Date Created
  • 2011
Former identifier
  • 998299133402996

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