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Journal of Biomedical Optics

Side-firing fiber device for underwater tissue ablation with Ho:YAG and Er:YAG laser radiation
Author(s): Oliver Foehn; Hans Surya Pratisto; Flurin Koenz; Michael Ith; Hans Joerg Altermatt; Martin Frenz; Heinz P. Weber
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Paper Abstract

A side-firing fiber device for arthroscopic Ho:YAG (?=2.12 µm) and Er:YAG (?=2.94 µm) laser applications was designed and constructed. The fiber delivery instrument consisted of a zirconium fluoride (ZrF4) fiber equipped with a coaxially mounted short end-piece of low OH? quartz fiber polished at an angle of 30 deg. The dynamics and depth of the vapor channel in water and the amplitude of pressure transients associated with the collapse of the vapor channel were measured for pulse energies up to 1 J (Ho:YAG) and 200 mJ for the Er:YAG laser (pulse duration t5400 µs), respectively. To assess the feasibility of the side-firing fiber delivery instrument, the ablation efficiency and laser-induced damage in poly(acylamide) and meniscal tissue were determined after Ho:YAG and Er:YAG laser ablation.

Paper Details

Date Published: 1 January 1998
PDF: 11 pages
J. Biomed. Opt. 3(1) doi: 10.1117/1.429868
Published in: Journal of Biomedical Optics Volume 3, Issue 1
Show Author Affiliations
Oliver Foehn, Univ. Berne (Switzerland)
Hans Surya Pratisto, Univ. Berne (United States)
Flurin Koenz, Univ. of Bern (Switzerland)
Michael Ith, Univ. of Bern (Switzerland)
Hans Joerg Altermatt, Univ. Bern (Switzerland)
Martin Frenz, Univ. of Bern (Switzerland)
Heinz P. Weber, Univ. of Bern (Switzerland)

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