Coherent light generators – Particular active media – Semiconductor
Patent
1998-05-01
2000-07-18
Kim, Robert H.
Coherent light generators
Particular active media
Semiconductor
372 43, 372 44, 372 46, 372 96, H01S 319
Patent
active
060917539
ABSTRACT:
A novel superlattice quantum cascade (SLQC) laser has undoped SL active regions, with the dopant concentration in the injector region being selected, such that, under an appropriate electrical bias, the SL active region is substantially electric field free. The absence of dopant atoms in the SL active region results in reduced carrier scattering and reduced optical losses, with consequent low threshold current and/or room temperature operation. The novel laser emits in the mid-IR spectral region and can be advantageously used in measurement or monitoring systems, e.g., in pollution monitoring systems.
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.
Treducucci et al., Applied Physics Letters, "High-Power Inter-Miniband Lasing in Intrinsic Superlattices", vol. 72, No. 19, pp. 2388-2390, May 11, 1998.
Scamarcio et al., Science, "High-Power Infrared (8-Micrometer Wavelength Superlattice Lasers", vol. 276, No. 5313, pp. 773-776, May 2, 1997.
"High Power Mid-Infrared (.lambda..about.5 .mu.m) Quantum Cascade Lasers Operating Above Room Temperature", by J. Faist et a., Applied Physics Letters, vol. 68 (26), Jun. 24, 1996, pp. 3680-3682.
"High-Power Infrared (8-Micrometer Wavelength) Superlattice Lasers", by G. Scamarcio et al., Science, vol. 276, May 2, 1997, pp. 773-776.
Patent Application (Serial No. 08/74,292, filed Nov. 6, 1996) F. Capasso 44-75-8-12-1-9-13.
Patent Application (Serial No. 08/852,646, filed May 7, 1997) J. N. Baillargeon 4-45-77-9-1-10-14.
Capasso Federico
Cho Alfred Yi
Faist Jerome
Gmachl Claire F.
Hutchinson Albert Lee
Inzirillo Gioacchino
Kim Robert H.
Lucent Technologies - Inc.
Pacher Eugen A.
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