Abstract

We implement a direct three-dimensional calculation of Čerenkov-radiation-type frequency doubling in an optical channel waveguide by using a finite-element guided-beam simulator. The simulator can predict an optimum configuration and the conversion efficiency of miniaturized frequency doublers that utilize guided-to-radiation-mode interactions in nonlinear channel waveguides. Computed results are shown for blue-light generation through the frequency doubling in a proton-exchanged MgO:LiNbO₃ channel waveguide.

© 1991 Optical Society of America

Numerical study of guided-wave sum-frequency generation through second-order nonlinear parametric processes

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