Modified gallium selenide crystals for high power nonlinear opti

Compositions – Light transmission modifying compositions

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252584, 359328, 423266, 423275, 423508, 423509, F21V 900, G02B 520, G02F 135, C01B 1904

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059807890

ABSTRACT:
A new method for improving the mechanical properties and nonlinear optical performance characteristics of gallium selenide crystals (GaSe) is disclosed. A charge of GaSe crystals was doped with indium before being made into a crystal. The indium-doped GaSe crystals have improved physical properties in that they can be cut along the cleave planes and the cleaved surfaces polished without the usual delaminations typically observed in prior art pure GaSe crystals. The indium-doped crystals were tested in a second harmonic generation (SHG) system and found to have nearly twice the SHG efficiency as pure, or undoped, GaSe crystals.

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