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Light-induced specular-reflectivity suppression at a gallium/silica interface

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Abstract

The reflectivity of a gallium/silica interface formed on an optical flat or at the tip of a cleaved optical fiber can be reduced in a reversible fashion when the interface is excited by a few milliwatts of laser power. This phenomenon occurs at temperatures just below gallium’s melting point. We believe that the effect can be attributed to light-induced structuring at the interface.

© 2000 Optical Society of America

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