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Nonlinear side effects of fs pulses inside corneal tissue during photodisruption

  • A. Heisterkamp*
  • , T. Ripken
  • , T. Mamom
  • , W. Drommer
  • , H. Welling
  • , W. Ertmer
  • , H. Lubatschowski
  • *Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer review

Abstract

In order to evaluate the potential for refractive surgery, fs laser pulses of 150-fs pulse duration were used to process corneal tissue of dead and living animal eyes. By focusing the laser radiation down to spot sizes of several microns, very precise cuts could be achieved inside the treated cornea, accompanied with minimum collateral damage to the tissue by thermal or mechanical effects. During histo-pathological analysis by light and transmission electron microscopy considerable side effects of fs photodisruption were found. Due to the high intensities at the focal region several nonlinear effects occurred. Self-focusing, photodissociation, UV-light production were observed, leading to streak formation inside the cornea.

Original languageEnglish
Pages (from-to)419-425
Number of pages7
JournalApplied Physics B: Lasers and Optics
Volume74
Issue number4-5
DOIs
Publication statusPublished - Apr 2002

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • General Physics and Astronomy

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