We demonstrate experimentally second-harmonic generation in waveguides induced by photorefractive solitons and show that the conversion efficiency is improved considerably. These induced waveguides are flexible and can be generated in any crystalline direction that allows soliton formation, and thus offer broad tunability (by rotation of the crystal), which cannot exist in fabricated waveguides.
© 1999 Optical Society of America
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons
(230.7370) Optical devices : Waveguides
(260.1180) Physical optics : Crystal optics
Song Lan, Ming-feng Shih, Greg Mizell, J. A. Giordmaine, Zhigang Chen, Charalambos Anastassiou, John Martin, and Mordechai Segev, "Second-harmonic generation in waveguides induced by photorefractive spatial solitons," Opt. Lett. 24, 1145-1147 (1999)