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Delivery of Nd:YAG laser pulses by large optical fiber: dependence of the laser intensity profile on threshold of energy transmission
Author(s): Bruno Richou; Pierre Pellat-Finet
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Paper Abstract

A laser-induced damage study on large-core, multimode fiber is presented. We develop a numerical analysis concerning high laser power transmission based on a beam ray tracing. Data are compared with experimental results obtained with a Nd-YAG laser and a step-index fiber. Studies of bulk damage in fiber show that the incident laser beam profile and the launching conditions are responsible of high-intensity sites inside the fiber. Gaussian and multimode spatial profiles are numerically investigated. Finally, we discuss optima laser characteristics to increase the energy transmission in the fiber.

Paper Details

Date Published: 23 September 1996
PDF: 9 pages
Proc. SPIE 2789, High-Power Lasers: Applications and Emerging Applications, (23 September 1996); doi: 10.1117/12.251177
Show Author Affiliations
Bruno Richou, Univ. de Toulon et du Var (France)
Pierre Pellat-Finet, ENST de Bretagne (France)

Published in SPIE Proceedings Vol. 2789:
High-Power Lasers: Applications and Emerging Applications
Georges Sayegh; Michael R. Osborne, Editor(s)

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