We present what is to our knowledge the first demonstration of photorefractive AlGaAs/GaAs quantum wells operated in the reflection geometry, using the quantum-confined Stark effect. This photorefractive geometry relies on volume reflection gratings of a small number of periods written in a nonstoichiometric multiple-quantum-well layer with counterpropagating beams. Combined absorptive and photorefractive twowave mixing gains as large as 1500 cm-1 are observed under reverse bias of the diode.
© 1996 Optical Society of America
D. D. Nolte, I. Lahiri, and M. R. Melloch, "Reflection-geometry photorefractive quantum wells," Opt. Lett. 21, 1888-1890 (1996)