An non-linear optical device for generating light of an angular frequency 2.omega. from incident light of an angular frequency .omega. by means of a non-linear optical effect, comprises a substrate body, formed by a semiconductive or insulating material;...http://www.google.es/patents/US5059001?utm_source=gb-gplus-sharePatente US5059001 - Non-linear optical device with quantum micro hetero structure
Non-linear optical device with quantum micro hetero structure
