Mid-IR Germanium oxide fibers for contact erbium laser tissue ablation in endoscopic surgery

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

Research output: Contribution to journalArticle

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 languageEnglish (US)
Pages (from-to)1709-1714
Number of pages6
JournalIEEE Journal on Selected Topics in Quantum Electronics
Volume13
Issue number6
DOIs
StatePublished - Nov 2007
Externally publishedYes

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

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  • Cite this

    Scott, N. J., Barton, R. A., Casperson, A. L., Tchapyjnikov, A., Levin, K., Tran, D., & Fried, N. M. (2007). Mid-IR Germanium oxide fibers for contact erbium laser tissue ablation in endoscopic surgery. IEEE Journal on Selected Topics in Quantum Electronics, 13(6), 1709-1714. https://doi.org/10.1109/JSTQE.2007.910557