Coherent light generators – Particular active media – Semiconductor
Patent
1996-10-16
1998-05-26
Healy, Brian
Coherent light generators
Particular active media
Semiconductor
372 43, 372 44, 372 45, 372 46, 372 98, 372 99, H01S 319
Patent
active
057578370
ABSTRACT:
A vertical-cavity surface emitting laser is constructed with an intracavity quantum well photodetector. The quantum well photodetector is placed at an optical intensity peak at the Fabry-Perot wavelength. The device may include a current confinement layer in the form of an oxidation layer, an air gap, or proton implantation. The device may be formed with a semi-insulating substrate, a p+ doped substrate, or an n+ doped substrate. Embodiments of the invention include an air bridge contact, a ridge waveguide structure, and buried heterostructure layers.
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Chang-Hasnain Connie J.
Lim Sui F.
Galliani William S.
Healy Brian
The Regents of the University of California
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