Abstract

We report temperature phase-matched second-harmonic generation of 1.064-μm radiation in Ti-indiffused waveguides in MgO-doped LiNbO3 substrates. Noncritical phase matching of the TE2 mode was achieved at 102–106°C. Owing to the high-temperature operation and the low photorefractivity of the waveguide, it was possible to generate 22-mW average-power 532-nm output. No evidence of photorefractive scattering was observed during 5 h of operation at 3-mW output.

© 1986 Optical Society of America

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