Photoacoustic signal formation in absorbing and scattering liquids

Seppo Nissilä, Onni Ahola, Harri Kopola, Risto Myllylä, Jussi Tenhunen, Zuomin Zhao

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    4 Citations (Scopus)


    The so-called photoacoustic technique combines optical properties, such as absorption and scattering, with acoustic properties, such as sound velocity and absorption, to monitor and measure the physical properties of materials. This paper comprises a theoretical study on the properties of acoustic pulses and a discussion on earlier theories presented in literature. It also describes and analyzes the results of simulation tests based on the Monte-Carlo method, undertaken to examine the effects that absorption and scattering co-efficients of two-layer media have on the shape of the acoustic transmitter. Finally, the theoretical results are corroborated with measurements using a CO2 laser and a two-wavelength diode laser PA system, developed during the study.
    Original languageEnglish
    Title of host publicationBiomedical Systems and Technologies II
    EditorsFrancesco Baldini, Nathan I. Croitoru, Mark Russell Dickinson, Martin Frenz, Mitsonobu Miyagi, Riccardo Pratesi, Stefan Seeger
    Place of Publication978-0-8194-2631-4
    PublisherInternational Society for Optics and Photonics SPIE
    Publication statusPublished - 1998
    MoE publication typeA4 Article in a conference publication
    EventBiomedical Systems and Technologies II - San Remo, Italy
    Duration: 4 Sept 19976 Sept 1997

    Publication series

    SeriesProceedings of SPIE


    ConferenceBiomedical Systems and Technologies II
    CitySan Remo


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