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Proceedings Paper

Measurements of laser-induced thermoelastic deformation using all-fiber heterodyne interferometer
Author(s): Seong Jun Park; Jong Hyun Eom; Chang Su Lee; Byeong Ha Lee
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Paper Abstract

We report an all-fiber heterodyne interferometer for the measurements of laser-induced thermoelastic deformation to estimate the Gruneisen coefficient and the optical attenuation depth of a sample. The system comprises a Q-switched Nd-YAG laser providing a nanosecond excitation pulse and an all-fiber heterodyne interferometer that measures the induced displacement of the sample surface. To evaluate the system, phantom experiments were carried out with various gelatin-based models. The results show that the attenuation depth and Gruneisen coefficient of the phantoms were about 4.256 mm and 0.568, respectively. In addition, increase of the weight fraction of gelatin led increase in the Gruneisen coefficient.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91571L (2 June 2014); doi: 10.1117/12.2059546
Show Author Affiliations
Seong Jun Park, Gwangju Institute of Science and Technology (Korea, Republic of)
Jong Hyun Eom, Gwangju Institute of Science and Technology (Korea, Republic of)
Chang Su Lee, The Univ. of Suwon (Korea, Republic of)
Byeong Ha Lee, Gwangju Institute of Science and Technology (Korea, Republic of)


Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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