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Proceedings Paper

Nd:YAG picosecond pulse delivery by cyclic olefin polymer-coated silver hollow glass waveguide
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Paper Abstract

The flexible hollow waveguides - a cyclic olefin polymer- coated silver hollow glass waveguides with various inner diameters - specially prepared for the delivery of high power 1.06 micrometers radiation were investigated using an oscillator-3 amplifiers Nd:YAG laser system. The length of a single pulse was equal to 50 psec. In dependence to a diameter of the waveguide, transmission/attenuation as a function of the input laser energy were measured together with the input/output time radiation characteristics and the spatial distribution of the output beam. The input energy up to 80 mJ, 70 mJ, and 30 mJ was transmitted with an efficiency higher that 90 percent for the COP/Ag hollow waveguides with a diameter of 1000 micrometers , 700 micrometers , and 540 micrometers , respectively. The picosecond temporal measurements show that the delivered pulse duration was not changed within a resolution of 5 picosecond. Therefore the maximum transmitted power reached was 1.5 GW. The characteristics obtained make all these waveguides very promising for the delivery of high-power laser pulse in special medical and other applications.

Paper Details

Date Published: 3 May 2000
PDF: 8 pages
Proc. SPIE 3911, Biomedical Diagnostic, Guidance, and Surgical-Assist Systems II, (3 May 2000); doi: 10.1117/12.384913
Show Author Affiliations
Helena Jelinkova, Czech Technical Univ. (Czech Republic)
Mitsunobu Miyagi, Tohoku Univ. (Japan)
Pavel Cerny, Czech Technical Univ. (Czech Republic)
Jan Sulc, Czech Technical Univ. (Czech Republic)
Yi-Wei Shi, Tohoku Univ. (Japan)
Yuji Matsuura, Tohoku Univ. (Japan)

Published in SPIE Proceedings Vol. 3911:
Biomedical Diagnostic, Guidance, and Surgical-Assist Systems II
Tuan Vo-Dinh; Warren S. Grundfest M.D.; David A. Benaron M.D., Editor(s)

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