Sponsor
This research was supported in part by the Murdock Foundation, Portland, Ore., and the Whitaker Foundation, Washington, D.C.
Published In
Applied Optics
Document Type
Article
Publication Date
12-1-1997
Subjects
Laser ablation, Cavitation, Bubbles, Multiphase flow
Abstract
The collapse of laser-induced cavitation bubbles creates acoustic transients within the surrounding medium and also pressure impulses to the ablation target and light-delivery fiber during microsecond laser ablation. The impulses are investigated here with time-resolved flash photography, and they are found to occur whether or not the light-delivery fiber is in contact with the target. We demonstrate that the impulses depend primarily on the energy stored in the cavitation bubble. They are not directly dependent on the mode of light delivery (contact versus noncontact), and they are also not directly correlated to the other acoustic transients. The pressure impulses do seem to be associated with the bubble-driven jet formation caused by the bubble collapse.
DOI
10.1364/AO.36.009034
Persistent Identifier
http://archives.pdx.edu/ds/psu/8141
Citation Details
HanQun Shangguan, Lee W. Casperson, and Scott A. Prahl, "Pressure impulses during microsecond laser ablation," Appl. Opt. 36, 9034-9041 (1997).
Description
This paper was published in Applied Optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-36-34-9034. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.