Large-core tube-leaky waveguide for delivery of high-powered Er:YAG laser

S. Kobayashi, T. Katagiri, Y. Matsuura

研究成果: Conference contribution

抄録

A tube-leaky fiber that consists of only dielectric thin-film tubing for delivery of Er:YAG laser light is presented. The tube-leaky fiber confines light in the airy core when the film thickness is properly chosen for target wavelength. Transmission properties of the fibers are derived by using a ray optic method and designed the optimum wall thickness for the Er:YAG laser wavelength of 2.94 micron. In fabrication of the tube leaky fiber, we use a microstructural tube made of glass to enhance mechanical strength. The central bore and surrounding glass thin layer that is held by the microstructure function as a tube-leaky fiber. We fabricate a large-core fiber for delivery of high-power medical lasers by stack-and-draw method and we use borosilicate-glass as a fiber material for low cost fabrication. Fabricated fibers have a diameter over 400 μm and from the loss measurements for Er:YAG laser, and the fibers deliver laser light with a transmission loss of 0.85 dB/m that is comparable to 0.7 dB/m of conventional hollow-optical fibers. The fibers withstand transmission of laser pulses with energy higher than 120 mJ. We confirm that these energies are enough to ablate biological tissues in surgical operations.

本文言語English
ホスト出版物のタイトルOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications XIV
出版社SPIE
ISBN(印刷版)9780819498519
DOI
出版ステータスPublished - 2014
イベントOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications XIV - San Francisco, CA, United States
継続期間: 2014 2 12014 2 2

出版物シリーズ

名前Progress in Biomedical Optics and Imaging - Proceedings of SPIE
8938
ISSN(印刷版)1605-7422

Other

OtherOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications XIV
CountryUnited States
CitySan Francisco, CA
Period14/2/114/2/2

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Atomic and Molecular Physics, and Optics
  • Radiology Nuclear Medicine and imaging

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