Publication

All-Optical Spatial Light-Modulator with Megahertz Modulation Rates

Benoît Marie Joseph Deveaud
1995
Journal Articles

Abstract

We demonstrate a novel all-optical spatial Light modulator capable of megahertz modulation rates. It is based on the quantum-confined Stark effect, but the modulating electric field is entirely photogenerated by strongly asymmetric photocarrier transfer in GaAs/AlAs layers. In a nonoptimized sample, cw optical excitation of approximately 50 W/cm(2) created a 30-kV/cm electric field, inducing a 9-meV exciton red shift at room temperature. Under pulsed excitation the photogenerated electric field can be switched on in a few tens of picoseconds and relaxes in a few hundred nanoseconds, permitting megahertz modulation rates. (C) 1995 Optical Society of America

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https://infoscience.epfl.ch/entities/publication/f7009a9f-5e43-4bdc-b166-1c75e759c1c8

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Benoît Marie Joseph Deveaud
1995
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/f7009a9f-5e43-4bdc-b166-1c75e759c1c8

About this result

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All-Optical Spatial Light-Modulator with Megahertz Modulation Rates

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