Kazansky, P.G., Takebe, H. and Russell, P.St.J.
Mechanism of glass poling: what happens in the depletion region?
At Bunsen Kolloquium, Germany.
23 - 24 Feb 1996.
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Recently permanent second-order nonlinearities (SON) as high as 1pm/V (~0.2 of the value chi22(2) in LiNbO3) have been observed in certain grades of thermally poled commercial fused silica. This result has excited considerable interest because it offers the possibility of parametric frequency converters and linear electrooptic modulators monolithically integrated into optical fibres or planar glass waveguides. A better understanding of the mechanism of glass poling, which is still not fully understood, may help improve the value of SON in poled glass, perhaps to values competitive with the best ferroelectric crystals.
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