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Proceedings Paper

Laser-induced breakdown in silver halide crystals and polycrystalline fibers
Author(s): Lev Nagli; Shaul Shalem; D. Burshtain; David Bunimovich; Abraham Katzir; Johannes Tschepe; Hans-Georg Eberle; Gerhard J. Mueller
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Paper Abstract

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.

Paper Details

Date Published: 26 November 1996
PDF: 7 pages
Proc. SPIE 2928, Biomedical Systems and Technologies, (26 November 1996); doi: 10.1117/12.259960
Show Author Affiliations
Lev Nagli, Tel Aviv Univ. (Israel)
Shaul Shalem, Tel Aviv Univ. (Israel)
D. Burshtain, Tel Aviv Univ. (Israel)
David Bunimovich, Tel Aviv Univ. (Israel)
Abraham Katzir, Tel Aviv Univ. (Israel)
Johannes Tschepe, Laser- und Medizintechnologie gGmbH (Germany)
Hans-Georg Eberle, Laser- und Medizintechnologie gGmbH Univ. Berlin (Germany)
Gerhard J. Mueller, Laser- und Medizintechnologie gGmbH Berlin (Germany)


Published in SPIE Proceedings Vol. 2928:
Biomedical Systems and Technologies
Nathan I. Croitoru; Martin Frenz; Terence A. King; Riccardo Pratesi; Anna Maria Verga Scheggi; Stefan Seeger; Otto S. Wolfbeis, Editor(s)

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