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

Nicholas J. Scott; Robert A. Barton; Andrew L. Casperson; Alexei Tchapyjnikov; Ken Levin; Danh Tran; Nathaniel M. Fried

doi:10.1117/12.760961

8 February 2008 Mid-IR germanium oxide fibers for erbium:YAG and erbium:YSGG contact laser tissue ablation in endourology

Nicholas J. Scott, Robert A. Barton, Andrew L. Casperson, Alexei Tchapyjnikov, Ken Levin, Danh Tran, Nathaniel M. Fried

Author Affiliations +

Proceedings Volume 6842, Photonic Therapeutics and Diagnostics IV; 684212 (2008) https://doi.org/10.1117/12.760961
Event: SPIE BiOS, 2008, San Jose, California, United States

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.

Citation Download Citation

Nicholas J. Scott, Robert A. Barton, Andrew L. Casperson, Alexei Tchapyjnikov, Ken Levin, Danh Tran, and Nathaniel M. Fried "Mid-IR germanium oxide fibers for erbium:YAG and erbium:YSGG contact laser tissue ablation in endourology", Proc. SPIE 6842, Photonic Therapeutics and Diagnostics IV, 684212 (8 February 2008); https://doi.org/10.1117/12.760961

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