Abstract
Endoscopic surgical applications of erbium lasers have been limited due to the lack of a suitable mid-IR optical fiber delivery system. Germanium oxide fibers are used for noncontact tissue ablation, but are not recommended for contact tissue ablation applications typically required during endoscopic surgery. 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 $^{\circ}$ angled tips or micromirrors. 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-m-long fibers, sufficient for endoscopic laser ablation of soft and hard tissues in contact mode.
Original language | English (US) |
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Pages (from-to) | 1709-1714 |
Number of pages | 6 |
Journal | IEEE Journal on Selected Topics in Quantum Electronics |
Volume | 13 |
Issue number | 6 |
DOIs | |
State | Published - Nov 2007 |
Externally published | Yes |
Keywords
- Ablation
- Erbium
- Laser ablation
- Laser biomedical applications
- Optical fiber testing
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Atomic and Molecular Physics, and Optics