High-Speed 2x2 Electrically-Driven Spatial Light Modulator made with GaAs/AlGaAs Multiple Quantum Wells (MQWs).
01 January 1987
A 2x2 array of individually driven MQW modulators has been fabricated. Because of the large electroabsorption effect in MQWs, good on/off ratios can be achieved in a single pass through a set of 50 MQWs. Each device has an on/off ratio of approximately 1.45:1, and the modulator displays rise and fall times of roughly 400 psec.