We have fabricated photorefractive InGaAs/GaAs multiple quantum wells that are sensitive at wavelengths near 1.06 μm for what is believed to be the first time. We have measured four-wave-mixing diffraction efficiency, using a Nd:YAG laser. A maximum diffraction efficiency of 7 × 10<sup>-4</sup> and a cutoff grating period of ∼2 μm are obtained.
© 2001 Optical Society of America
S. Iwamoto, S. Taketomi, H. Kageshima, M. Nishioka, T. Someya, Y. Arakawa, K. Fukutani, T. Shimura, and K. Kuroda, "Photorefractive multiple quantum wells at 1064 nm," Opt. Lett. 26, 22-24 (2001)