Photoacoustic gas detection based on external cavity diode laser light sources

János Sneider, Zoltán Bozóki, Gábor Szabó, Zsolt Bor

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

An external cavity diode laser is constructed and shown to have stable, narrow-linewidth operation around 840 nm. Based on this laser and a photoacoustic detector, a gas monitoring system capable of measuring absorption coefficients as low as 10-8 cm-1 is developed. The continuous (mode-hop-free) tuning range of the laser is found to exceed 100 GHz, which makes possible the spectrally resolved detection of water vapor absorption lines. The photoacoustic cell with the external cavity diode laser as a light source offers great potential for the development of a portable, automated gas detection system.

Original languageEnglish
Pages (from-to)482-486
Number of pages5
JournalOptical Engineering
Volume36
Issue number2
DOIs
Publication statusPublished - Feb 1997

Keywords

  • External cavity diode laser
  • Littman configuration
  • Photoacoustic and photothermal science and engineering
  • Photoacoustic gas detection

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)

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