Hollow bent output devices in CO2 laser light delivery system

Katsumasa Iwai; Yi-Wei Shi; Yuji Matsuura; Mitsunobu Miyagi; Junko Oishi; Yoshihide Okagami

doi:10.1117/12.463808

26 March 2002 Hollow bent output devices in CO₂ laser light delivery system

Katsumasa Iwai, Yi-Wei Shi, Yuji Matsuura, Mitsunobu Miyagi, Junko Oishi, Yoshihide Okagami

Proceedings Volume 4616, Optical Fibers and Sensors for Medical Applications II; (2002) https://doi.org/10.1117/12.463808
Event: International Symposium on Biomedical Optics, 2002, San Jose, CA, United States

Abstract

In order to change the output direction of laser light in a small operation space, two types of hollow bent output devices are proposed for medical laser light delivery system. One is the hollow fiber insert-type, which is of the bending radius of 40 mm. The other type, based on a fixed- bent pyrex glass tube, is of the minimum bending radius of 2 mm. Both types of devices are inner-coated with a silver layer and a cyclic olefin polymer (COP) layer. Loss properties for CO₂ laser light are clarified for the insert-type devices, called laryngo-tip. And the transmission properties for pilot beams are experimentally discussed. For the fixed-bent tips, the losses are around 0.7 dB, which are almost independent on the bending angles and radii. Transmissions of the tips remain undamaged after 1-hour-delivery of 5 W output CO₂ laser light.

Citation Download Citation

Katsumasa Iwai, Yi-Wei Shi, Yuji Matsuura, Mitsunobu Miyagi, Junko Oishi, and Yoshihide Okagami "Hollow bent output devices in CO₂ laser light delivery system", Proc. SPIE 4616, Optical Fibers and Sensors for Medical Applications II, (26 March 2002); https://doi.org/10.1117/12.463808

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