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Proceedings Paper

Tapered metal-coated optical fibers for high-energy laser pulses delivery
Author(s): Alexander G. Papashvili; Vladimir A. Bogatyrjov; Konstantin M. Golant; Valery A. Kozlov; Alexander N. Perov; Alexander V. Shakhanov; Alexej Alexander Sysoliatin
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Paper Abstract

Metal-coated (Al) tapered all-silica fibers with core diameter up to 1.2 mm, the input/output diameter ratio up to 3:1, the tapered length 1.5 - 2 m, and the core-clad refractive index difference up to 0.017 have been prepared for high energy laser pulses delivery. The increased input diameter allows us to launch higher energy into the fiber keeping the surface power density well below the threshold of radiation-induced surface damage. Using laser radiation with the beam divergence of 3 mrad, the transmission of the fibers has been found to be 85%. Both free running and Q-switched TEM00-mode regimes of Nd:YAG laser have been used to demonstrate stable operation of the fibers for the following set of input parameters: 40 mJ pulse energy, 25 ns pulse duration, and 15 Hz pulse repetition rate.

Paper Details

Date Published: 28 July 1994
PDF: 4 pages
Proc. SPIE 2131, Biomedical Fiber Optic Instrumentation, (28 July 1994); doi: 10.1117/12.180709
Show Author Affiliations
Alexander G. Papashvili, General Physics Institute (Russia)
Vladimir A. Bogatyrjov, General Physics Institute (Russia)
Konstantin M. Golant, General Physics Institute (Russia)
Valery A. Kozlov, General Physics Institute (Russia)
Alexander N. Perov, General Physics Institute (Russia)
Alexander V. Shakhanov, General Physics Institute (Russia)
Alexej Alexander Sysoliatin, General Physics Institute (Russia)

Published in SPIE Proceedings Vol. 2131:
Biomedical Fiber Optic Instrumentation
James A. Harrington; David M. Harris; Abraham Katzir; Fred P. Milanovich, Editor(s)

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