Semi-insulating InGaAs/GaAs multiple quantum wells are fabricated by metal-organic vapor-phase epitaxy and proton implantation. Two-wave mixing gain and four-wave mixing diffraction efficiency are measured at wavelengths of 0.91–0.94µm in the Franz–Keldysh geometry. We observe a large photorefractive effect caused by the excitonic electro-optic effect. The maximum diffraction efficiency reaches ~1.5×10-4 .
© 1999 Optical Society of America
S. Iwamoto, H. Kageshima, T. Yuasa, M. Nishioka, T. Someya, Y. Arakawa, K. Fukutani, T. Shimura, and K. Kuroda, "Resonant photorefractive effect in InGaAs/GaAs multiple quantum wells," Opt. Lett. 24, 321-323 (1999)