Coherent light generators – Particular active media – Semiconductor
Patent
1996-11-06
1998-04-28
Davie, James W.
Coherent light generators
Particular active media
Semiconductor
H01S 319
Patent
active
057455163
ABSTRACT:
The novel unipolar laser resembles a quantum cascade laser but utilizes radiative transitions between upper and lower minibands of superlattices, with injection of charge carriers from the lower miniband into the upper miniband of the adjacent downstream superlattice facilitated by a multilayer injector region. The lasing wavelength is typically in the mid-infrared, selectable by choice of the superlattice parameters. The novel laser is potentially well suited for high power operation, since it utilizes carrier transport in minibands, as opposed to tunneling between discrete energy states.
REFERENCES:
patent: 5570386 (1996-10-01), Capasso et al.
Patent No. 5,457,709, filed on Apr. 4, 1994 and issued on Oct. 10, 1995 to F. Capasso et al., Class: 372/45.
Patent No. 5,509,025, filed on Jan. 9, 1995 and issued on Apr. 16, 1996 to F. Capasso et al., Class: 372/45.
Patent 5,502,787, filed on May 22, 1995 and issued on Mar. 26, 1996 to F. Capasso et al., Class: 385/123.
"High Power Mid-infrared (.lambda..about.5 .mu.m) Quantum Cascade Lasers Operating Above Room Temperature", by J. Faist, Applied Physics Letters, vol. 68(26), 24 Jun. 1996, pp. 3680-3682.
Capasso Federico
Cho Alfred Yi
Faist Jerome
Hutchinson Albert Lee
Scamarcio Gaetano
Davie James W.
Lucent Technologies - Inc.
Pacher Eugen E.
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