Photoacoustic Point Source
Abstract
We investigate the photoacoustic effect generated by heat deposition at a point in space in an inviscid fluid. Delta-function and long Gaussian optical pulses are used as sources in the wave equation for the displacement potential to determine the fluid motion. The linear sound-generation mechanism gives bipolar photoacoustic waves, whereas the nonlinear mechanism produces asymmetric tripolar waves. The salient features of the photoacoustic point source are that rapid heat deposition and nonlinear thermal expansion dominate the production of ultrasound.
- Authors:
- Publication Date:
- Sponsoring Org.:
- (US)
- OSTI Identifier:
- 40205754
- Resource Type:
- Journal Article
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 86; Journal Issue: 16; Other Information: DOI: 10.1103/PhysRevLett.86.3550; Othernumber: PRLTAO000086000016003550000001; 016115PRL; PBD: 16 Apr 2001; Journal ID: ISSN 0031-9007
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; DELTA FUNCTION; DEPOSITION; PHOTOACOUSTIC EFFECT; POINT SOURCES; PRODUCTION; THERMAL EXPANSION; WAVE EQUATIONS
Citation Formats
Calasso, Irio G, Craig, Walter, and Diebold, Gerald J. Photoacoustic Point Source. United States: N. p., 2001.
Web. doi:10.1103/PhysRevLett.86.3550.
Calasso, Irio G, Craig, Walter, & Diebold, Gerald J. Photoacoustic Point Source. United States. https://doi.org/10.1103/PhysRevLett.86.3550
Calasso, Irio G, Craig, Walter, and Diebold, Gerald J. 2001.
"Photoacoustic Point Source". United States. https://doi.org/10.1103/PhysRevLett.86.3550.
@article{osti_40205754,
title = {Photoacoustic Point Source},
author = {Calasso, Irio G and Craig, Walter and Diebold, Gerald J},
abstractNote = {We investigate the photoacoustic effect generated by heat deposition at a point in space in an inviscid fluid. Delta-function and long Gaussian optical pulses are used as sources in the wave equation for the displacement potential to determine the fluid motion. The linear sound-generation mechanism gives bipolar photoacoustic waves, whereas the nonlinear mechanism produces asymmetric tripolar waves. The salient features of the photoacoustic point source are that rapid heat deposition and nonlinear thermal expansion dominate the production of ultrasound.},
doi = {10.1103/PhysRevLett.86.3550},
url = {https://www.osti.gov/biblio/40205754},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 16,
volume = 86,
place = {United States},
year = {Mon Apr 16 00:00:00 EDT 2001},
month = {Mon Apr 16 00:00:00 EDT 2001}
}
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