title: Reflection-geometry photorefractive quantum wells.
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 twowave mixing gains as large as 1500 cm(-1) are observed under reverse bias of the diode.
authors.forename: D D
authors.initials: DD
authors.lastname: Nolte
authors.forename: I
authors.initials: I
authors.lastname: Lahiri
authors.forename: M R
authors.initials: MR
authors.lastname: Melloch