Coherent light generators – Particular active media – Semiconductor
Patent
1990-01-09
1991-03-12
Epps, Georgia
Coherent light generators
Particular active media
Semiconductor
357 4, 357 7, 372 99, H01S 319
Patent
active
049998439
ABSTRACT:
A vertical laser is typically formed by successive horizontal layers, epitaxially grown on a substrate, suitable for forming a bottom mirror, a bottom cladding layer, an active region, a top cladding layer, and a top mirror. In prior art, one of a pair of electrodes for enabling electrical pumping the laser--the "top" electrode--is attached to the top surface of the top mirror, whereby undesirably large amounts of heat are generated because of the relatively high impedance of the top mirror. To reduce this heat generation, the laser is redesigned to enable the top electrode to make lateral contact with the top cladding layer, whereby the impedance and hence the power loss are reduced.
Luryi Sergey
Xie Ya-Hong
AT&T Bell Laboratories
Caplan D. I.
Epps Georgia
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