Coherent light generators – Particular active media – Semiconductor
Patent
1997-04-29
1999-08-10
Bovernick, Rodney
Coherent light generators
Particular active media
Semiconductor
H01S 319
Patent
active
059369892
ABSTRACT:
The core of the disclosed novel quantum cascade (QC) laser comprises a multiplicity of nominally identical repeat units, with a given repeat unit comprising a superlattice active region and a carrier injector region. Associated with the superlattice active region is an upper and a lower energy miniband, with the lasing transition being the transition from the lower edge of the upper miniband to the upper edge of the lower miniband. The injector facilitates carrier transport from the lower miniband to the upper miniband of the adjacent downstream repeat unit. QC lasers according to this invention can be designed to emit in the infrared, e.g., in the wavelength region 3-15 .mu.m, and can have high power.
REFERENCES:
patent: 5457709 (1995-10-01), Capasso et al.
patent: 5502787 (1996-03-01), Capasso et al.
patent: 5509025 (1996-04-01), Capasso et al.
patent: 5745516 (1998-04-01), Capasso et al.
Patent Application F. Capasso 43-74-7-11-8-12 mailed Mar. 27, 1997.
Capasso Federico
Cho Alfred Yi
Faist Jerome
Hutchinson Albert Lee
Scamarcio Gaetano
Bovernick Rodney
Leung Quyen Phan
Lucent Technologies - Inc.
Pacher Eugen E.
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