The European Physical Journal Special Topics

, Volume 154, Issue 1, pp 319–323 | Cite as

Influence of the light intensity on the operation of the self-oscillation photoacoustic setup

  • T. Borowski
  • T. Starecki


In the traditional approach to photoacoustic measurements, the light source modulation frequency is fixed, or a resonance tracking mechanism is applied, that adjusts the modulation frequency to the instantaneous value of the resonance frequency of the cell, especially in the case of high Q-factor cells. However, photoacoustic measurements can also be based on a novel method in which the light intensity is modulated by the photoacoustic signal induced in the cell, hence forming a photoacoustic oscillator. Frequency of such an oscillator and shape of the resulting photoacoustic signal depend mainly on the resonance properties of the cell, but also on the power of the light irradiating the investigated sample. This paper describes the influence of the intensity of light used for exciting the photoacoustic signal on the operation of such a photoacoustic generator.


Resonance Frequency European Physical Journal Special Topic Photoacoustic Signal Helmholtz Resonator Microphone Signal 
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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2008

Authors and Affiliations

  • T. Borowski
    • 1
  • T. Starecki
    • 2
  1. 1.Independent researcher, Baborowska 5/18WarsawPoland
  2. 2.Institute of Electronic Systems, Warsaw University of TechnologyWarsawPoland

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