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Proceedings Paper

Development of optical transmitters for high-amplitude focused ultrasound
Author(s): Hyoung Won Baac; Adam Maxwell; Jong G. Ok; Kuang-Wei Lin; Zhen Xu; L. Jay Guo
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Paper Abstract

This paper investigates the use of thin-film optical transmitters to generate focused ultrasound, aiming to develop highamplitude focused ultrasound. Composite films were used as the optoacoustic sources, which consist of carbonnanotubes (CNTs) and elastomeric polymers. As the nano-composites work as excellent optical absorbers and efficient heat converters, thermo-elastic volume deformation within the composites produces strong optoacoustic pressure. These films were formed on concave substrates for optoacoustic generation of the focused ultrasound. A focal waveform was measured using a single-mode fiber-optic hydrophone. A peak positive pressure of ~4 MPa was achieved.

Paper Details

Date Published: 23 February 2012
PDF: 6 pages
Proc. SPIE 8223, Photons Plus Ultrasound: Imaging and Sensing 2012, 822317 (23 February 2012); doi: 10.1117/12.909204
Show Author Affiliations
Hyoung Won Baac, Univ. of Michigan (United States)
Adam Maxwell, Univ. of Michigan (United States)
Jong G. Ok, Univ. of Michigan (United States)
Kuang-Wei Lin, Univ. of Michigan (United States)
Zhen Xu, Univ. of Michigan (United States)
L. Jay Guo, Univ. of Michigan (United States)

Published in SPIE Proceedings Vol. 8223:
Photons Plus Ultrasound: Imaging and Sensing 2012
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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