Observation of room-temperature blue shift and bistability in a strained InGaAs-GaAs 〈111〉 self-electro-optic effect device

Abstract

We have observed room-temperature exciton blue shift with applied voltage in a 〈111〉 In0.1Ga0.9As-GaAs p-i-n multiple quantum well modulator. We have also observed optically induced bistability in a symmetric self-electro-optic effect device circuit composed of these modulators. Very large (2.5:1) ratios of photocurrent were obtained with only 0–3 V applied bias.