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Imaging and Microscopy with Optoacoustic and Photothermal Methods

  • G. Busse
Conference paper
Part of the Springer Series in Optical Sciences book series (SSOS, volume 31)

Abstract

Optoacoustic (also called photoacoustic) and photothermal imaging is based on the propagation of thermal waves [1] and their interaction with thermal structures in a solid [2]. These waves are locally generated in the surface of the sample by the absorption of an intensity modulated focused laser beam which is scanned across the sample. They are detected via the correlated temperature modulation. The classical method is optoacoustic detection where the sample is kept in an airtight cell. The temperature modulation, which depends on optical and thermal sample properties, results in a gas pressure modulation which can be heard as sound [3]. A more modern method uses piezoceramics for detection of modulated thermal expansion [4].

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Copyright information

© Springer-Verlag Berlin Heidelberg 1982

Authors and Affiliations

  • G. Busse
    • 1
  1. 1.Zentrale Wiss. Einrichtung PhysikHochschule der Bundeswehr MünchenNeubibergFed. Rep. of Germany

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