Quantum cascade laser: A tool for trace chemical detection

Allan J. Evans, Manijeh Razeghi*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Laser-based trace chemical sensors are highly desired to enhance pollution filtering, health and safety monitoring, and filter efficiency monitoring for industrial processes. Limitations of current monitoring and sensing techniques are discussed and the benefits of mid-infrared spectroscopy using novel Quantum Cascade semiconductor Lasers (QCLs) are presented. These new techniques promise inexpensive, miniaturized sensors, capable of remote detection of trace chemicals in liquids, solids, and gasses with levels less than 1 part-per-billion. Applications of these techniques are discussed and the most recent developments of application-ready high power (> 100 mW), continuous-wave, mid-infrared QCLs operating above room temperature with lifetimes exceeding 12,000 hours are presented.

Original languageEnglish (US)
Title of host publication20th Annual Conference and Exposition of the American Filtration and Separations Society 2007
Pages914-923
Number of pages10
StatePublished - Dec 1 2007
Event20th American Filtration and Separations Society Annual National Conference and Exposition 2007 - Orlando, FL, United States
Duration: Mar 26 2007Mar 30 2007

Publication series

NameAmerican Filtration and Separations Society - 20th Annual Conference and Exposition of the American Filtration and Separations Society 2007
Volume2

Other

Other20th American Filtration and Separations Society Annual National Conference and Exposition 2007
CountryUnited States
CityOrlando, FL
Period3/26/073/30/07

ASJC Scopus subject areas

  • Filtration and Separation
  • Industrial and Manufacturing Engineering
  • Environmental Science(all)

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  • Cite this

    Evans, A. J., & Razeghi, M. (2007). Quantum cascade laser: A tool for trace chemical detection. In 20th Annual Conference and Exposition of the American Filtration and Separations Society 2007 (pp. 914-923). (American Filtration and Separations Society - 20th Annual Conference and Exposition of the American Filtration and Separations Society 2007; Vol. 2).