Abstract
Photorefractive AlGaAs/GaAs multiple quantum well structures exhibit strong photorefractive two wave mixing1 in the transverse-field geometry. The phase shift of the photorefractive grating approaches π/2 for DC fields above Ec = 4 kV/cm. The four-wave mixing diffraction efficiency2 saturates for fields larger than Ec.
© 1993 Optical Society of America
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