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 two-wave mixing gains as large as 1500 cm−1 are observed under reverse bias of the diode.
© 1996 Optical Society of America
Original Manuscript: July 12, 1996
Published: December 1, 1996
D. D. Nolte, M. R. Melloch, and I. Lahiri, "Reflection-geometry photorefractive quantum wells," Opt. Lett. 21, 1888-1890 (1996)