Publication Details

Control of Broadband Optically Generated Ultrasound Pulses Using Binary Amplitude Holograms

BROWN Michael D., JAROŠ Jiří, COX Ben T. and TREEBY Bradley E. Control of Broadband Optically Generated Ultrasound Pulses Using Binary Amplitude Holograms. Journal of the Acoustical Society of America, vol. 139, no. 4, 2016, pp. 1637-1647. ISSN 1520-8524. Available from: http://scitation.aip.org/content/asa/journal/jasa/139/4/10.1121/1.4944758
Czech title
Generování ultrazvuku pomocí laseru
Type
journal article
Language
english
Authors
Brown Michael D. (UCL)
Jaroš Jiří, doc. Ing., Ph.D. (DCSY FIT BUT)
Cox Ben T. (UCL)
Treeby Bradley E. (UCL)
URL
Keywords

ultrasound, photoacoustic , spectral methods, k-Wave

Abstract

In this work, the use of binary amplitude holography is investigated as a mechanism to focus broadband acoustic pulses generated by high peak-power pulsed lasers. Two algorithms are described for the calculation of the binary holograms; one using ray-tracing, and one using an optimization based on direct binary search. It is shown using numerical simulations that when a binary amplitude hologram is excited by a train of laser pulses at its design frequency, the acoustic field can be focused at a pre-determined distribution of points, including single and multiple focal points, and line and square foci. The numerical results are validated by acoustic field measurements from binary amplitude holograms, excited by a high peak-power laser.

Published
2016
Pages
1637-1647
Journal
Journal of the Acoustical Society of America, vol. 139, no. 4, ISSN 1520-8524
Publisher
American Institute of Physics for the Acoustical Society of America
DOI
UT WoS
000374974900017
EID Scopus
BibTeX
@ARTICLE{FITPUB10973,
   author = "D. Michael Brown and Ji\v{r}\'{i} Jaro\v{s} and T. Ben Cox and E. Bradley Treeby",
   title = "Control of Broadband Optically Generated Ultrasound Pulses Using Binary Amplitude Holograms",
   pages = "1637--1647",
   journal = "Journal of the Acoustical Society of America",
   volume = 139,
   number = 4,
   year = 2016,
   ISSN = "1520-8524",
   doi = "10.1121/1.4944758",
   language = "english",
   url = "https://www.fit.vut.cz/research/publication/10973"
}
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