Abstract
Multiple-quantum-well (MQW) structures are highly suitable for new optoelectronic devices. In particular, based on intersubband absorption and sequential resonant tunneling,1 new concepts in IR photodetection and modulation have recently been developed.2,3 This paper presents the experimental determination of the ultimate response time of such IR devices using a femtosecond correlation technique.
© 1988 Optical Society of America
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