Quadratic optical nonlinearity of an amorphous heterojunction
Agapov A. Yu., Zhitkov P. M., Favstov V. G., Shevtsov V. M.
It has been shown experimentally, in the particular case of second-harmonic generation in a multilayer planar optical waveguide, that an amorphous heterojunction can have a significant quadratic nonlinearity. The possibility of "constructing" nonlinear media from ultrathin amorphous films is demonstrated.
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![](/ps/1166/article_17620_800_head.png "It has been shown experimentally, in the particular case of second-harmonic generation in a multilayer planar optical waveguide, that an amorphous heterojunction can have a significant quadratic nonlinearity. The possibility of "constructing" nonlinear media from ultrathin amorphous films is demonstrated.")