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26 November 1996 Laser-induced breakdown in silver halide crystals and polycrystalline fibers
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The maximal laser power transmitted through polycrystalline silver halide fibers is limited by their IR absorption and optical strength. The mechanisms of the IR absorption and laser-induced breakdown (LIB) thresholds Pc in AgClxBr1-x crystals and polycrystalline fibers were studied. Investigations, including mechanical treatments, heat treatments, and luminescence properties were performed to clarify the reason for the IR absorption and LIB in silver halide crystals and fibers. From these experiments we concluded that one of the reasons for LIB may be the avalanche of electrons in the conduction band of the crystal. These seed electrons are produced by the IR absorption of the cation vacancies in these crystals. A simple annealing procedure for reduction of the IR absorption of fibers is proposed.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Lev Nagli, Shaul Shalem, D. Burshtain, David Bunimovich, Abraham Katzir, Johannes Tschepe, Hans-Georg Eberle, and Gerhard J. Mueller "Laser-induced breakdown in silver halide crystals and polycrystalline fibers", Proc. SPIE 2928, Biomedical Systems and Technologies, (26 November 1996);

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