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Titolo:
PICOSECOND FREE-ELECTRON LASER STUDIES OF AUGER RECOMBINATION IN ARSENIC-RICH INAS1-XSBX STRAINED-LAYER SUPERLATTICES AT 300K
Autore:
CIESLA CM; MURDIN BN; PIDGEON CR; STRADLING RA; PHILLIPS CC; BAIN DJ; GALBRAITH I; JAROSZYNSKI DA; LANGERAK CJGM; TANG PJP; PULLIN MJ;
Indirizzi:
HERIOT WATT UNIV,DEPT PHYS EDINBURGH EH14 4AS MIDLOTHIAN SCOTLAND FOM,INST PLASMA PHYS NL-3430 BE NIEUWEGEIN NETHERLANDS UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,DEPT PHYS LONDON SW7 2AZ ENGLAND UNIV PARIS 11,LURE F-91405 ORSAY FRANCE
Titolo Testata:
IEE proceedings. Optoelectronics
fascicolo: 5, volume: 144, anno: 1997,
pagine: 331 - 335
SICI:
1350-2433(1997)144:5<331:PFLSOA>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
QUANTUM-WELLS; INAS; MAGNETOPHOTOLUMINESCENCE; PHOTOLUMINESCENCE; SEMICONDUCTORS; INAS/INGASB; IN(AS,SB); LIFETIME; INSB;
Keywords:
FREE ELECTRON LASERS; STRAINED LAYER SUPERLATTICES;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
30
Recensione:
Indirizzi per estratti:
Citazione:
C.M. Ciesla et al., "PICOSECOND FREE-ELECTRON LASER STUDIES OF AUGER RECOMBINATION IN ARSENIC-RICH INAS1-XSBX STRAINED-LAYER SUPERLATTICES AT 300K", IEE proceedings. Optoelectronics, 144(5), 1997, pp. 331-335

Abstract

Room temperature pump-probe transmission experiments have been performed on arsenic-rich InAs/lnAs(1-x)Sb(x) strained layer superlattices (SLS) using a picosecond far-infrared free electron laser,With excitation frequencies well above the fundamental bandgap, near 10 mu m, largeexcited carrier concentrations were obtained, allowing the density dependence of the recombination rate to be determined directly. The results have been interpreted in terms of an 8x8 k.p SLS energy band calculation, including the full dispersion for both k in-plane and k parallel to the growth direction. A comparison with identical measurements on epilayers of InSb, of comparable room temperature bandgap, shows that the Auger processes have been substantially suppressed in the superlattices. In the non-degenerate regime, where the Auger lifetime scalesas tau(aug)(-1) = C1Ne2, a value of C-1 between 10 and 100 times smaller is obtained for the SLS structures.

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Documento generato il 24/09/20 alle ore 07:37:07