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Proceedings Paper

Mid-IR germanium oxide fibers for erbium:YAG and erbium:YSGG contact laser tissue ablation in endourology
Author(s): Nicholas J. Scott; Robert A. Barton; Andrew L. Casperson; Alexei Tchapyjnikov; Ken Levin; Danh Tran; Nathaniel M. Fried
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Paper Abstract

Endoscopic surgical applications of Erbium:YAG and Erbium:YSGG lasers have been limited due to the lack of a suitable mid-IR optical fiber delivery system. Germanium oxide fibers are currently used in the clinic for non-contact tissue ablation, but are not recommended for contact tissue ablation applications typically required during endoscopic surgery in a fluid environment. This study describes the assembly and characterization of hybrid mid-IR fibers consisting of germanium oxide trunk fibers and sapphire fiber tips, and side-firing germanium oxide fibers with either 45° angled fiber tips or micro-mirrors. Average powers up to 8.5 W (850 mJ at 10 Hz) and transmission up to 70% was demonstrated through 450-μm-core, 1.5-meter-long fibers, sufficient for endoscopic laser ablation of soft and hard tissues in contact mode.

Paper Details

Date Published: 8 February 2008
PDF: 7 pages
Proc. SPIE 6842, Photonic Therapeutics and Diagnostics IV, 684212 (8 February 2008); doi: 10.1117/12.760961
Show Author Affiliations
Nicholas J. Scott, Univ. of North Carolina at Charlotte (United States)
Robert A. Barton, Univ. of North Carolina at Charlotte (United States)
Andrew L. Casperson, Univ. of North Carolina at Charlotte (United States)
Alexei Tchapyjnikov, Infrared Fiber Systems, Inc. (United States)
Ken Levin, Infrared Fiber Systems, Inc. (United States)
Danh Tran, Infrared Fiber Systems, Inc. (United States)
Nathaniel M. Fried, Univ. of North Carolina at Charlotte (United States)


Published in SPIE Proceedings Vol. 6842:
Photonic Therapeutics and Diagnostics IV
Kenton W. Gregory; Guillermo J. Tearney; Reza S. Malek; Nikiforos Kollias; Bernard Choi; Haishan Zeng; Brian Jet-Fei Wong; Justus F. R. Ilgner; Henry Hirschberg; Steen J. Madsen, Editor(s)

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