Coherent light generators – Particular active media – Semiconductor
Patent
1983-10-19
1986-03-18
Davie, James W.
Coherent light generators
Particular active media
Semiconductor
357 16, 357 17, 357 61, 372 45, H01S 319, H01L 3300
Patent
active
045773220
ABSTRACT:
A double heterojunction lead salt diode infrared laser having an active region of a lead salt semiconductor of a given lattice constant, energy band gap, and index of refraction. The active region is sandwiched between two lead salt semiconductor layers containing ytterbium that are mutually of opposite conductivity type and have substantially the same lattice constant as the active layer. In addition, the ytterbium-containing lead salt layers have an energy band gap greater than the active layer and an index of refraction less than the active layer. Hence, the laser has lattice matching, as well as enhanced, carrier confinement and optical confinement.
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Davie James W.
Epps Georgia Y.
General Motors Corporation
Wallace Robert J.
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