Laser-flash photography of laser-induced spallation in liquid media

Steven Jacques, Gary Gofstein, Ronald S. Dingus

Research output: Chapter in Book/Report/Conference proceedingConference contribution

22 Scopus citations

Abstract

Laser-flash photography was used to document the onset of cavitation bubbles induced in liquid media by Q-switched laser pulses. Such bubbles are hypothesized to indicate the "breakage of water" by negative stress caused by the inverting reflectance of a laser-induced propagating stress wave at the air/liquid interface. Absorption of the pulsed laser by the liquid caused thermoelastic expansion which generated the initial stress distribution. These liquid phantom experiments model the situation for tissues where such "breakage" of the tissue structure can contribute to the process of tissue removal by the phenomenon called "spallation". The threshold dosimetry for cavitation and explosive vaporization were determined. The threshold negative stress for onset of water cavitation under the dynamic stress conditions induced by ∼ 140-ns laser pulses is approximately -8 bars.

Original languageEnglish (US)
Title of host publicationLaser-Tissue Interaction III
PublisherSPIE
Pages284-294
Number of pages11
Volume1646
ISBN (Electronic)9780819407924
DOIs
StatePublished - Aug 7 1992
Externally publishedYes
EventLaser-Tissue Interaction III 1992 - Los Angeles, United States
Duration: Jan 19 1992Jan 24 1992

Other

OtherLaser-Tissue Interaction III 1992
CountryUnited States
CityLos Angeles
Period1/19/921/24/92

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Jacques, S., Gofstein, G., & Dingus, R. S. (1992). Laser-flash photography of laser-induced spallation in liquid media. In Laser-Tissue Interaction III (Vol. 1646, pp. 284-294). SPIE. https://doi.org/10.1117/12.137470