Abstract
There is growing interest in applying the unique room-temperature optical absorption properties of free excitons in quantum wells1 to high-speed integrated optical devices. Modulators employing the quantum-confined Stark effect have been demonstrated.2 Here we propose a new class of optoelectronic device based on quenching the excitonic absorption by Introducing free carriers whose density can be varied electrically. These versatile exciton-quenching devices intrinsically combine picosecond electronic operation with the ability to modulate and detect optical signals.
© 1987 Optical Society of America
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