Journal article
Quasi-Gaussian beam analytical basis and comparison with an alternative approach (L)
The Journal of the Acoustical Society of America, Vol.130(3), pp.1091-1094
09/2011
Handle:
https://hdl.handle.net/2376/103892
PMID: 21895050
Abstract
A superposition of propagating Bessel beams was recently numerically demonstrated to approximate a Gaussian beam and was used to evaluate the scattering by a sphere centered on the focal point of the beam. An analytical beam synthesis used in optics by Agrawal and Pattanayak [J. Opt. Soc. Am. 69, 575-578 (1979)] is found here to be recovered as the weak focusing limit of the quasi-Gaussian beam when evanescent contributions are omitted from the analytical synthesis. The propagating-wave part of the analytical synthesis has similarities to, and differences from, the recent quasi-Gaussian approximation.
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Details
- Title
- Quasi-Gaussian beam analytical basis and comparison with an alternative approach (L)
- Creators
- Philip L Marston - Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164-2814, USA. marston@wsu.edu
- Publication Details
- The Journal of the Acoustical Society of America, Vol.130(3), pp.1091-1094
- Academic Unit
- Physics and Astronomy, Department of
- Publisher
- United States
- Identifiers
- 99900547090001842
- Language
- English
- Resource Type
- Journal article