Blue external-cavity diode laser for NO2 gas detection

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations


The commercial availability of laser diodes emitting in the blue spectral region offer excellent opportunity for using them in the detection of nitrogen dioxide (NO2) gas. Nitrogen dioxide, which is one of the main air pollutants, has strong light absorption cross-section in the blue spectral region. In this paper, a tunable blue diode laser in Littrow external-cavity configuration is investigated. The output power, spectral line-width and tunable range are measured. The results will be used to select a suitable external cavity diode laser (ECDL) system based on a multimode blue laser diode to be employed for the detection of NO2 gas.

Original languageEnglish
Title of host publicationSemiconductor Lasers and Laser Dynamics IX
EditorsMarc Sciamanna, Rainer Michalzik, Krassimir Panajotov, Sven Hofling
ISBN (Electronic)9781510634848
StatePublished - 2020

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Bibliographical note

Publisher Copyright:
© 2020 SPIE.


  • External cavity diode laser
  • Fabry-Perot laser diode
  • Optical feedback
  • Reflective holographic grating

ASJC Scopus subject areas

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


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