Coherent light generators – Particular active media – Semiconductor
Patent
1992-03-25
1993-05-18
Epps, Georgia Y.
Coherent light generators
Particular active media
Semiconductor
372 46, 372 96, H01S 319
Patent
active
052127028
ABSTRACT:
The present applicant has discovered that one can make a surface emitting laser with enhanced operating characteristics by etching away the outer reflector stack peripheral to the intended active area and protecting the reflector stack mesa remaining over the active area by in situ metalization in high vacuum. The active area can be isolated, as by ion implantation, providing an electrical path through the active region free of the outer reflector stack. The result is a surface emitting laser having reduced series resistance. The device lases at lower voltage and provides an enhanced intensity of optical output as compared with conventional planar devices.
REFERENCES:
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AT&T Bell Laboratories
Books Glen E.
Epps Georgia Y.
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