Calculating absolute optical absorption coefficients from photoacoustic measurements by iterative fitting

Yi Wang; Ruikang Wang

doi:10.1117/12.764588

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28 February 2008 Calculating absolute optical absorption coefficients from photoacoustic measurements by iterative fitting

Yi Wang, Ruikang Wang

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Proceedings Volume 6856, Photons Plus Ultrasound: Imaging and Sensing 2008: The Ninth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics; 685628 (2008) https://doi.org/10.1117/12.764588
Event: SPIE BiOS, 2008, San Jose, California, United States

Abstract

We propose and demonstrate a new photoacoustic method to calculate the absolute optical absorption coefficient of a sample. An exact solution of the wave equation is employed to iteratively fit the detected photoacoustic signals. We fit the ratio of the amplitudes of the characteristic peaks of photoacoustic signals in order to increase fitting speed and reduce the influences of background signals. This method is tested by both numerical simulations and experimental results.

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Yi Wang and Ruikang Wang "Calculating absolute optical absorption coefficients from photoacoustic measurements by iterative fitting", Proc. SPIE 6856, Photons Plus Ultrasound: Imaging and Sensing 2008: The Ninth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics, 685628 (28 February 2008); https://doi.org/10.1117/12.764588

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