Abstract

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

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