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Mechanism of Low-Threshold Hypersonic Cavitation Stimulated by Broadband Laser Pump

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Date

1999

Authors

Bunkin, N
Lobeyev, A
Lyakhov, G
Ninham, Barry

Journal Title

Journal ISSN

Volume Title

Publisher

American Physical Society

Abstract

The excitation of hypersonic waves prompted by a stimulated Brillouin scattering (SBS) mechanism was investigated for low threshold acoustic cavitation. The efficiency of SBS in prompting hypersonic wave excitation declines when there is a shift from practically monochromatic pumping to broadband pumping. Cavitation was observed at low intensities of acoustic pressure. This observation is attributed to the presence of fixed sized nanobubbles in the liquid.

Description

Keywords

Keywords: Anisotropy; Brillouin scattering; Bubbles (in fluids); Cavitation; Light polarization; Neodymium lasers; Optical pumping; Photons; Four-photon spectroscopy; Hypersonic waves; Nanobubbles; Stimulated Brillouin scattering (SBS); Hypersonic flow

Citation

URI

http://hdl.handle.net/1885/93580

Collections

ANU Research Publications

Source

Physical Review E

Type

Journal article

Book Title

Entity type

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