Delivery of Nd:YAG laser pulses by large optical fiber: dependence of the laser intensity profile on threshold of energy transmission

Bruno Richou; Pierre Pellat-Finet

doi:10.1117/12.251177

23 September 1996 Delivery of Nd:YAG laser pulses by large optical fiber: dependence of the laser intensity profile on threshold of energy transmission

Bruno Richou, Pierre Pellat-Finet

Author Affiliations +

Proceedings Volume 2789, High-Power Lasers: Applications and Emerging Applications; (1996) https://doi.org/10.1117/12.251177
Event: Lasers, Optics, and Vision for Productivity in Manufacturing I, 1996, Besancon, France

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.

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Bruno Richou and Pierre Pellat-Finet "Delivery of Nd:YAG laser pulses by large optical fiber: dependence of the laser intensity profile on threshold of energy transmission", Proc. SPIE 2789, High-Power Lasers: Applications and Emerging Applications, (23 September 1996); https://doi.org/10.1117/12.251177

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