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)
84 Downloads (Pure)


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
Issue number3
Early online date30 Oct 2015
Publication statusPublished - 1 Feb 2016


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

Fingerprint Dive into the research topics of 'Detection of nitrous oxide (N<sub>2</sub>O) at sub-ppmv using intracavity absorption spectroscopy'. Together they form a unique fingerprint.

Cite this