Absorption edges of mixed silver-halide crystals and polycrystalline optical fibers

Barkay, N.; Moser, F.; Kowal, D.; Katzir, A.
March 1989
Applied Physics Letters;3/20/1989, Vol. 54 Issue 12, p1083
Academic Journal
Optical absorption edges of mixed AgClxBr1-x (0≤x≤1) crystals and polycrystalline fibers were investigated as a function of composition. Both visible edge, resulting from electronic transitions, and infrared edge due to multiphonon processes behave as the one-mode (amalgamation) type of mixed crystals, shifting continuously with composition. Quantitative expressions were used to discuss the results. Polycrystalline extruded fibers preserve this spectral window of silver-halide crystals, except for slight deviations which are explained by the small-grain structure of the fibers.


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