V. Albanis, V. Fedotov, K. Macdonald, V. Emelyanov, N. Zheludev, R. Knize, B. Zhdanov, A. Rode
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Gigantic broadband optical nonlinearity in gallium films deposited by ultrafast laser ablation
Gallium-silica interfaces have emerged as a new type of structure that combines a strong nonlinearity with picosecond switching-on time. Here we report that the optical nonlinearity of gallium films deposited on fused silica by ultrafast pulsed laser ablation is very broadband, spanning from 480 nm to 810 nm.