Role of tissue optics and pulse duration on tissue effects during high-power laser irradiation

Steven L. Jacques

Research output: Contribution to journalArticle

154 Scopus citations

Abstract

The primary zone of deposition of optical energy is called here the optical zone. The tissue absorption, tissue scattering, laser-beam diameter, or size of pigmented structures can specify the size of the optical zone. The initial optical zone may be altered by the formation of char during high-irradiance laser exposure, and a spectrum of char absorbance is presented. The relationship between the optical zone and the pulse duration specifies the type of laser-tissue interaction that may occur. Short laser pulses can confine thermal energy and/or stress energy within the optical zone, which maximizes photothermal and photomechanical mechanisms of interaction.

Original languageEnglish (US)
Pages (from-to)2447-2454
Number of pages8
JournalApplied Optics
Volume32
Issue number13
DOIs
StatePublished - May 1993
Externally publishedYes

Keywords

  • Dosimetry
  • Laser
  • Monte carlo
  • Tissue optics

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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