Rajagopal, Srinath;
Allen, Thomas;
Berendt, Martin;
Lin, Di;
Alam, Shaif-Ul;
Richardson, David J;
Cox, Ben T;
(2023)
The effect of source backing materials and excitation pulse durations on laser-generated ultrasound waveforms.
The Journal of the Acoustical Society of America
, 153
(5)
, Article 2649. 10.1121/10.0019306.
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Abstract
In this article, it is shown experimentally that a planar laser-generated ultrasound source with a hard reflective backing will generate higher acoustic pressures than a comparable source with an acoustically matched backing when the stress confinement condition is not met. Furthermore, while the source with an acoustically matched backing will have a broader bandwidth when the laser pulse is short enough to ensure stress confinement, the bandwidths of both source types will converge as the laser pulse duration increases beyond stress confinement. The explanation of the results is supported by numerical simulations.
| Type: | Article |
|---|---|
| Title: | The effect of source backing materials and excitation pulse durations on laser-generated ultrasound waveforms |
| Location: | United States |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1121/10.0019306 |
| Publisher version: | https://doi.org/10.1121/10.0019306 |
| Language: | English |
| Additional information: | © 2023 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10169302 |
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