Flexible beam guiding in a microsurgical UV laser scalpel

Georg Hillrichs, Hartmut Dietz, Martin Rütting, Stanislav Schastak, Peter Wiedemann, Yuji Matsuura, Mitsunobu Miyagi, Karl Friedrich Klein

研究成果: Article査読

8 被引用数 (Scopus)

抄録

Many potential microsurgical applications of UV laser radiation need a flexible beam guiding system. Especially for the argon fluorine excimer laser-(λ = 193 nm) and for the 5th harmonic of the Nd:YAG laser (λ=213 nm) the use of optical fused silica fibers is difficult. In this work we designed and tested a laboratory prototype of a scalpel for surgical treatments of the retina based on UV laser ablation. To achieve the necessary flexibility and to provide laser fluences above the ablation threshold of retina we developed a new type of beam guiding device. A hollow core waveguide is used in combination with a short length of a special fused silica optical fiber to guide the laser beam. To increase the laser fluence at the distal scalpel tip and to achieve a very small cut width a fused silica fiber (core diameter 600 μm) has been tapered down to a diameter of about 150 μm. We discuss some details of the UV laser beam guiding and show the first results of laser cutting experiments.

本文言語English
ページ(範囲)199-206
ページ数8
ジャーナルProceedings of SPIE - The International Society for Optical Engineering
4616
DOI
出版ステータスPublished - 2002 1月 1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学

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