Investigations into the interaction of a high power semiconductor diode laser with biological tissue

P.D. Youell, M.R. Dickinson, T.A. King

Research output: Chapter in Book/Conference proceedingConference contribution

Abstract

Preliminary investigations of the interaction between a continuous wave diode laser and biological tissue are presented. The laser used has a wavelength of 980 nm and a maximum output power of 10 W. The tests were carried out on porcine liver samples. The interaction was seen to develop over three different stages during laser irradiation. The initial stage of tissue coagulation was followed by a distinct tissue surface eruption, followed by the ablation of a crater into the tissue. Measurements of the time evolution of these stages are presented over a range of incident spot diameters, and related to theoretical expectations. Measurements taken from the resultant crater are presented, including the extent of residual tissue damage around the crater, over a range of applied laser exposure times.
Original languageEnglish
Title of host publicationLaser Interaction with Hard and Soft Tissue
EditorsMartin J. C. van Gemert, Rudolf W. Steiner, Lars Othar Svaasand, Hansjoerg Albrecht
PublisherSPIE
Pages109-117
Number of pages9
DOIs
Publication statusPublished - 1 Feb 1994
EventEuropto Biomedical Optics '93 - Budapest, Hungary
Duration: 29 Aug 19933 Sept 1993

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
Volume2077
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceEuropto Biomedical Optics '93
Country/TerritoryHungary
CityBudapest
Period29/08/933/09/93

Keywords

  • tissues
  • laser tissue interaction
  • laser ablation
  • natural surfaces
  • semiconductor lasers
  • laser cutting
  • laser irradiation
  • liver
  • tissue optics
  • semiconductors

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