Abstract
A comprehensive review of the physics and applications high speed quantum well lasers will be given. Starting from fundamental quantum-confinement issues on which initial predictions of high-speed modulation characteristics are based, the review will include recent understandings on gain saturation, quantum capture and carrier transport in quantum wells—issues which may prevent quantum well lasers from ever achieving their potentials for broadband modulation as predicted earlier. On the other hand, narrow band "resonant" modulation and self-mode-locking have been achieved at mm-wave frequencies at or above 100 GHz, which opened up new applications in mm-wave systems, such as beam-forming in phased-arrayed antennae, and carrier distribution in mm- wave cellular networks. Both applications and fundamental device physics will be covered in this review.
© 1996 Optical Society of America
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