Abstract

A new method for frequency conversion in optical waveguides using rotationally twinned domains is proposed. High coupling efficiency is achieved for higher-order modes. The index step requirements are significantly reduced. The calculated conversion efficiency in a ZnSe–ZnS0.6Se0.4 structure is 4% for 1 mW of input power over a 3-mm phase-matched length.

© 1988 Optical Society of America

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