Detection of nitrous oxide (N2O) at sub-ppmv using intracavity absorption spectroscopy

Jonas K. Valiunas, George Stewart, Gautam Das

Research output: Contribution to journalArticle

3 Citations (Scopus)
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Abstract

We demonstrate a fiber laser system for the detection of the greenhouse gas, nitrous oxide (N2O), at sub-ppmv concentration levels. The fiber laser is stabilized by a saturable absorber. The sensitivity is enhanced by multiple circulations of amplified spontaneous emission light under threshold conditions, and multi-longitudinal mode oscillation of the laser. An intra-cavity Herriott cell of an effective path length of 30 m was used to detect the P (12) rotational line of N2O at ∼1522.20 nm.
Original languageEnglish
Pages (from-to)359-362
Number of pages4
JournalIEEE Photonics Technology Letters
Volume28
Issue number3
Early online date30 Oct 2015
DOIs
Publication statusPublished - 1 Feb 2016

Keywords

  • laser spectroscopy
  • intracavity spectroscopy
  • absorption
  • cavity resonators
  • optical fibers
  • optical attenuators
  • fiber gratings

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