Carrier-carrier interaction and fast intersubband scattering in wide GaAs quantum wells
Wide quantum wells, where the energy spacing between the first two energy levels is lower than the energy of the polar optical phonon, could represent the ideal condition to obtain a population inversion and the production of infrared lasers. On the other hand in these quantum wells the efficiency of carrier-carrier scattering is increasing with the width of the well and can produce a relatively quick relaxation of carriers in the first subband. In this work we present a detailed and systematic joint theoretical and experimental investigation considering different well width and carrier density and we conclude that in most cases the carrier-carrier scattering is sufficiently strong to forbid a significant population inversion.
WOS:000080081600020
1999
103
106
Materials Science Forum; 297-298
ECCE, IT-42019 Scandiano, RE, Italy. Swiss Fed Inst Technol, IMO, Dept Phys, CH-1015 Lausanne, Switzerland. Rota, L, ECCE, Via Brolo Sopra 3, IT-42019 Scandiano, RE, Italy.
ISI Document Delivery No.: BM90N
Cited References:
CRAIG K, 1994, SEMICOND SCI TECH S, V9, P627
FAIST J, 1994, APPL PHYS LETT, V64, P872
FERREIRA R, 1989, PHYS REV B, V40, P1074
GOODNICK SM, 1988, PHYS REV B, V37, P2578
HARTIG M, 1996, PHYS REV B, V54, P14269
HELM M, 1994, APPL PHYS LETT, V64, P872
HEYMAN JN, 1995, PHYS REV LETT, V74, P2682
LEVENSON JA, 1989, SOLID STATE ELECTRON, V32, P1869
MURDIN BN, 1994, SEMICOND SCI TECH, V9, P1554
OBERLI DY, 1987, PHYS REV LETT, V59, P696
ROTA L, 1993, PHYS REV B, V47, P4226
TATHAM MC, 1989, PHYS REV LETT, V63, P1637
Article
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