Abstract
The theory of photorefractive grating formation in a semi-insulating GaAs/AlGaAs multiple-quantum-well structure (MQWS) with an electric field applied across the layers and for counterpropagating writing beams is presented. The gain and the response time demonstrate a resonant behavior with respect to variations in both the applied field and the light’s wavelength. For a semi-insulating MQWS such an interaction geometry could provide the highest two-wave mixing gain, as much as 104 cm−1, which exceeds the linear absorption.
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