Towards precision measurements of methane with interband cascade lasers

Chris Hovde, Daniel B. Oh, Mark A. Zondlo, Chul Soo Kim, Mijin Kim, William Bewley, Chadwick L. Canedy, Igor Vurgaftman, Jerry R. Meyer, S. Gregory Jones, Titania A.R. Schmidt, Kenneth M. Suzuki

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

1 Scopus citations

Abstract

Measurement of the isotopic composition of atmospheric methane is a valuable tool for understanding the sources and sinks of the global carbon budget. One promising carbon isotope ratio measurement technology is optical spectroscopy using inter-band cascade (IC) lasers. Ongoing development of these light sources has the goal of providing, from a package operating near room temperature, a single mode laser source in the wavelength range of 3 μm. The spectral features of methane are sufficiently strong at this wavelength that a path length of about 100 m should suffice for measuring 12- and 13-C isotopes in air without pre-concentrating the sample. Experimental IC lasers are described and their use for isotope sensing by wavelength modulation spectroscopy is evaluated.

Original languageEnglish (US)
Title of host publicationChemical and Biological Sensors for Industrial and Environmental Monitoring III
DOIs
StatePublished - Dec 1 2007
Externally publishedYes
EventChemical and Biological Sensors for Industrial and Environmental Monitoring III - Boston, MA, United States
Duration: Sep 11 2007Sep 12 2007

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6756
ISSN (Print)0277-786X

Other

OtherChemical and Biological Sensors for Industrial and Environmental Monitoring III
CountryUnited States
CityBoston, MA
Period9/11/079/12/07

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Keywords

  • Infrared
  • Interband cascade laser
  • Isotope ratio
  • Methane

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  • Cite this

    Hovde, C., Oh, D. B., Zondlo, M. A., Kim, C. S., Kim, M., Bewley, W., Canedy, C. L., Vurgaftman, I., Meyer, J. R., Gregory Jones, S., Schmidt, T. A. R., & Suzuki, K. M. (2007). Towards precision measurements of methane with interband cascade lasers. In Chemical and Biological Sensors for Industrial and Environmental Monitoring III [67560B] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6756). https://doi.org/10.1117/12.734215