Publication result detail

Control of Broadband Optically Generated Ultrasound Pulses Using Binary Amplitude Holograms

BROWN, M.; JAROŠ, J.; COX, B.; TREEBY, B.

Original Title

Control of Broadband Optically Generated Ultrasound Pulses Using Binary Amplitude Holograms

English Title

Control of Broadband Optically Generated Ultrasound Pulses Using Binary Amplitude Holograms

Type

WoS Article

Original 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.

English 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.

Keywords

ultrasound, photoacoustic , spectral methods, k-Wave

Key words in English

ultrasound, photoacoustic , spectral methods, k-Wave

Authors

BROWN, M.; JAROŠ, J.; COX, B.; TREEBY, B.

RIV year

2020

Released

01.04.2016

ISBN

1520-8524

Periodical

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA

Volume

139

Number

4

State

United States of America

Pages from

1637

Pages to

1647

Pages count

11

URL

http://scitation.aip.org/content/asa/journal/jasa/139/4/10.1121/1.4944758

BibTex

@article{BUT130915,
  author="Michael {Brown} and Jiří {Jaroš} and Ben {Cox} and Bradley {Treeby}",
  title="Control of Broadband Optically Generated Ultrasound Pulses Using Binary Amplitude Holograms",
  journal="JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA",
  year="2016",
  volume="139",
  number="4",
  pages="1637--1647",
  doi="10.1121/1.4944758",
  issn="0001-4966",
  url="http://scitation.aip.org/content/asa/journal/jasa/139/4/10.1121/1.4944758"
}

Documents

2016-Brown-JASA-Holograms-annotated