Noncontact photoacoustic tomography using optical fiber-based heterodyne interferometer

Jonghyun Eom; Seong Jun Park; Young Ho Kim; Chang Su Lee; Byeong Ha Lee

doi:10.1117/12.2059013

2 June 2014 Noncontact photoacoustic tomography using optical fiber-based heterodyne interferometer

Jonghyun Eom, Seong Jun Park, Young Ho Kim, Chang Su Lee, Byeong Ha Lee

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 915795 (2014) https://doi.org/10.1117/12.2059013
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

We propose the noncontact photoacoustic tomography system that reads the acoustic signal by using an optical fiberbased heterodyne interferometer. The surface displacement of a specimen, resulting from the acoustic wave generated by irradiation of a laser pulse and its absorption inside the specimen, is optically measured by the heterodyne interferometer. With the data set of the surface displacement, the photoacoustic image of the specimen is reconstructed by a Fourier transform based reconstruction algorithm. This proposed method is experimentally evaluated by using a phantom sample that contains PET fibers.

Citation Download Citation

Jonghyun Eom, Seong Jun Park, Young Ho Kim, Chang Su Lee, and Byeong Ha Lee "Noncontact photoacoustic tomography using optical fiber-based heterodyne interferometer", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915795 (2 June 2014); https://doi.org/10.1117/12.2059013

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