Thermally poled germanosilicate films with high second-order nonlinearity
Digonnet, M. J. F.
Kino, G. S.
Proceedings of the Conference on Lasers and Electro-Optics, CLEO 2005
2097 - 2099
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Accurate measurements of the second-order nonlinearity profile of thermally poled low-loss germanosilicate films grown on fused-silica substrates are reported, of interest as potential electro-optic devices. After optimization, we demonstrate a record high nonlinear coefficient d 33 ≈ 1.6 pm/V, a two-fold improvement over highest reported d 33 value in fused silica that we attribute to the presence of germanium.