Laser-flash photographic studies of Er:YAG laser ablation of water

Steven L. Jacques, Gary Gofstein

Research output: Contribution to journalConference article

1 Scopus citations

Abstract

Photographic studies of pulsed infrared laser irradition of a pure target illustrate two aspects of mass removal: (1) surface evaporation, and (2) explosive vaporization. A pulsed Erbium: YAG laser provided radiation at a 2.9-μm wavelength for delivery to the target site and triggered a second visible laser (nitrogen/dye laser) for illumination of the target site for photography. A variable time delay between the Er:YAG and dye lasers allowed selection of the time of the photograph (GREQ 1 μs). The photographs distinguish between (1) rapid surface evaporation when the energy deposition achieves high temperatures but does not supply the full enthalpy of vaporization, and (2) explosive vaporization of water when the entire enthalpy of vaporization has been provided by the laser pulse.

Original languageEnglish (US)
Pages (from-to)632-667
Number of pages36
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume1427
StatePublished - Jan 1 1991
Externally publishedYes
EventProceedings of Laser-Tissue Interaction II - Los Angeles, CA, USA
Duration: Jan 21 1991Jan 23 1991

ASJC Scopus subject areas

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

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