A high-sensitivity, near-infrared tunable-diode-laser-based photoacoustic water-vapour-detection system for automated operation

Zoltán Bozókl, János Sneider, Z. Gingl, A. Mohácsi, Miklós Szakéll, Z. Bor, Gábor Szabó

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

A photoacoustic sensor system for automatic detection of low concentrations of water vapour is described in this paper. A Littman-configuration external-cavity diode laser operating at 1125 nm was used as a light source in combination with a high-sensitivity measuring photoacoustic cell, a reference photoacoustic cell and PC-controlled electronics. The system was calibrated with synthetic gas samples and a detection limit of 13 μmol per mol of water vapour was determined. Adsorption/desorption phenomena at the walls of the measuring photoacoustic cell were found to be an important limiting factor for the sensitivity of the system.

Original languageEnglish
Pages (from-to)999-1003
Number of pages5
JournalMeasurement Science and Technology
Volume10
Issue number11
DOIs
Publication statusPublished - Nov 1999

Fingerprint

Tunable Laser
Photoacoustic effect
Diode Laser
Water Vapor
Steam
Water vapor
Semiconductor lasers
water vapor
Infrared
semiconductor lasers
Infrared radiation
sensitivity
cells
Cell
External Cavity
Detection Limit
Desorption
low concentrations
light sources
desorption

Keywords

  • Diode laser
  • Photoacoustic spectroscopy
  • Water vapour

ASJC Scopus subject areas

  • Polymers and Plastics
  • Ceramics and Composites
  • Materials Science (miscellaneous)

Cite this

A high-sensitivity, near-infrared tunable-diode-laser-based photoacoustic water-vapour-detection system for automated operation. / Bozókl, Zoltán; Sneider, János; Gingl, Z.; Mohácsi, A.; Szakéll, Miklós; Bor, Z.; Szabó, Gábor.

In: Measurement Science and Technology, Vol. 10, No. 11, 11.1999, p. 999-1003.

Research output: Contribution to journalArticle

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