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Proceedings Paper

Pulsed laser induced acoustic wave propagation and interaction in liquid: experiment and simulation
Author(s): Sang Gil Ryu; Seung Hwan Ko; Nipun Misra; Heng Pan; Costas P. Grigoropoulos; Nick Kladias; Elias Panides; Gerald A. Domoto
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Paper Abstract

In-situ experimental work on laser induced pressure waves in water is presented in this paper. A double frequency Nd:YAG laser(532 nm, 4 ns pulse width) was irradiated on a chromium thin film on quartz substrate in contact with water. A plane pressure wave with high temporal and spatial resolution was generated by the laser induced thermoelastic stress around 8~12 mJ/cm2 below the regime of shock wave generation. The pressure wave was observed to propagate at the speed of sound in water. The plane acoustic wave could be interacted and focused with solid structures. FEM numerical simulations of the aforementioned phenomena are also carried out to solve the 2D transient wave equation and compared with the experimental results.

Paper Details

Date Published: 11 March 2008
PDF: 7 pages
Proc. SPIE 6856, Photons Plus Ultrasound: Imaging and Sensing 2008: The Ninth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics, 68561A (11 March 2008); doi: 10.1117/12.764314
Show Author Affiliations
Sang Gil Ryu, Univ. of California at Berkeley (United States)
Seung Hwan Ko, Univ. of California at Berkeley (United States)
Nipun Misra, Univ. of California at Berkeley (United States)
Heng Pan, Univ. of California at Berkeley (United States)
Costas P. Grigoropoulos, Univ. of California at Berkeley (United States)
Nick Kladias, Xerox Corp. (United States)
Elias Panides, Xerox Corp. (United States)
Gerald A. Domoto, Xerox Corp. (United States)


Published in SPIE Proceedings Vol. 6856:
Photons Plus Ultrasound: Imaging and Sensing 2008: The Ninth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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