Mid-IR germanium oxide fibers for Erbium:YAG and Erbium:YSGG contact laser tissue ablation in endourology

被引：0
|
作者：
Seott, Nicholas J. [1 ]
Barton, Robert A. [1 ]
Casperson, Andrew L. [1 ]
Tchapyjnikov, Alexei [2 ]
Levin, Ken [2 ]
Tran, Danh [2 ]
Fried, Nathaniel M. [1 ]
机构：
[1] Univ N Carolina, Dept Phys & Opt Sci, Charlotte, NC 28223 USA
[2] Infrared Fiber Syst Inc, Silver Spring, MD USA
来源：
PHOTONIC THERAPEUTICS AND DIAGNOSTICS IV | 2008年 / 6842卷
基金：
美国国家卫生研究院;
关键词：
endoscopic; Erbium; Erbium : YAG; Erbium : YSGG; fiber; germanium oxide; mid-infrared; sapphire;
D O I：
10.1117/12.760961
中图分类号：
Q6 [生物物理学];
学科分类号：
071011 ;
摘要：
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 degrees 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-mu m-core, 1.5-meter-long fibers, sufficient for endoscopic laser ablation of soft and hard tissues in contact mode.
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页数：7
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