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
Original Manuscript: November 19, 1985
Manuscript Accepted: January 15, 1986
Published: April 1, 1986
M. M. Fejer, M. J. F. Digonnet, and R. L. Byer, "Generation of 22 mW of 532-nm radiation by frequency doubling in Ti:MgO:LiNbO3 waveguides," Opt. Lett. 11, 230-232 (1986)