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Light-induced metallization in laser-deposited gallium films

Kevin F. MacDonald, Vassili A. Fedotov, Robert W. Eason, Nikolay I. Zheludev, Andrei V. Rode, Barry Luther-Davies, and Vladimir I. Emel’yanov

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Abstract

We have found that mirrors prepared upon silica glass by ultrafast pulsed laser deposition of elemental gallium show a highly reproducible and fully reversible light-induced reflectivity increase. The effect is explained as being due to nonthermal light-induced metallization of gallium at the interface.

© 2001 Optical Society of America

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