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Opt Express. 2008 Dec 22;16(26):21914-21.

Large enhancement of femtosecond laser micromachining speed in dye-doped hydrogel polymers.

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1
The Institute of Optics, University of Rochester, Rochester, New York 14627, USA. dingli@optics.rochester.edu

Abstract

Ophthalmologic hydrogel polymers are doped with Fluorescein or Coumarin dyes prior to the femtosecond laser micromachining process. We find that the achievable micromachining writing speed can be greatly increased while maintaining large refractive index changes (up to +0.08). Compared with previous results in dye-doped polymers that do not contain water such as PMMA, we obtain much larger index changes and much faster writing speeds.

PMID:
19104623
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