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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 10, Iss. 3 — Feb. 11, 2002
  • pp: 171–176

Intratissue surgery with 80 MHz nanojoule femtosecond laser pulses in the near infrared

Karsten König, Oliver Krauss, and Iris Riemann  »View Author Affiliations


Optics Express, Vol. 10, Issue 3, pp. 171-176 (2002)
http://dx.doi.org/10.1364/OE.10.000171


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Abstract

The use of 1 nanojoule near infrared 80 MHz femtosecond laser pulses for highly precise intratissue processing, in particular for intraocular refractive surgery, was evaluated. Destructive optical breakdown at TW/cm2 light intensities in a subfemtoliter intrastromal volume was obtained by diffraction-limited focussing with an 40x objective (N.A. 1.3) and beam scanning 50 to 140 μm below the epithelial surface. Using the same system at GW/cm2 intensities two-photon excited autofluorescence imaging was used to determine the target of interest and to visualize intraocular laser effects. Histological examination of laser-exposed porcine eyes reveal a minimum cut size below 1 μm without destructive effects to surrounding tissues.

© Optical Society of America

OCIS Codes
(140.7090) Lasers and laser optics : Ultrafast lasers
(170.1020) Medical optics and biotechnology : Ablation of tissue

ToC Category:
Research Papers

History
Original Manuscript: January 4, 2002
Revised Manuscript: January 31, 2002
Published: February 11, 2002

Citation
Karsten Koenig, Oliver Krauss, and Iris Riemann, "Intratissue surgery with 80 MHz nanojoule femtosecond laser pulses in the near infrared," Opt. Express 10, 171-176 (2002)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-10-3-171


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