Diode laser based photoacoustic humidity sensors

Zoltán Bozóki, Miklós Szakáll, Árpád Mohácsi, Gábor Szabó, Zsolt Bor

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Various diode laser based photoacoustic (PA) systems applied in water vapour detection are presented. The dependence of the systems' performance on the physical and chemical properties of the measured gas is discussed. It was found that the pressure dependence of the measured PA signal is different for amplitude and wavelength modulated lasers. This difference is explained. Linearity in a concentration range of more than four orders of magnitude in combination with typical accuracy of a few percentages was proved.

Original languageEnglish
Pages (from-to)219-226
Number of pages8
JournalSensors and Actuators, B: Chemical
Volume91
Issue number1-3
DOIs
Publication statusPublished - Jun 1 2003

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Keywords

  • Diode laser
  • Humidity detection
  • Photoacoustic

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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