✦ LIBER ✦

Time-resolved four-wave-mixing of exciton transitions in GaAs/AlGaAs quantum wells: Novel effects in the lineshape

✍ Scribed by Karl Leo

Publisher: Springer
Year: 1991
Tongue: English
Weight: 490 KB
Volume: 53
Category: Article
ISSN: 1432-0630
DOI: 10.1007/bf00323870

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Propagation effects in spectrally resolv

Propagation effects in spectrally resolved transient four wave mixing measurements on excitons in GaAs multiple quantum wells

✍ Bipul Pal; A.S Vengurlekar; A.V Gopal; S.S Prabhu 📂 Article 📅 2004 🏛 Elsevier Science 🌐 English ⚖ 319 KB

We perform spectrally resolved degenerate four wave mixing (DFWM) measurements by resonantly exciting 1s heavy hole excitons in 8 and 17:5 nm wide GaAs multiple quantum wells (MQW) with subpicosecond laser pulses. The signal is detected in a self-di raction mode in backward geometry. The DFWM spectr

The effect of Γ-X mixing on the direct e

The effect of Γ-X mixing on the direct excitonic photoluminescence in GaAs/AlGaAs quantum wells

✍ P. Perlin; T.P. Sosin; W. Trzeciakowski; E. Litwin-Staszewska 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 398 KB

The effects of photoexcited free carrier

The effects of photoexcited free carriers on exciton dynamics in GaAs/AlGaAs quantum wells

✍ B.M. Ashkinadze; E. Cohen; Arza Ron; E. Linder 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 140 KB

We report on the effect of photogenerated free carriers on the spectral diffusion and on the LO-phonon Raman scattering of resonantly excited excitons. This is observed by an exciton population redistribution between localized states and by a decrease in the Raman scattering intensity under an extre

Four-wave mixing signals from extended e

Four-wave mixing signals from extended exciton states above the mobility edge in GaAs/(Ga,Al)As multiple quantum wells

✍ G. Bongiovanni; A. Mura; J.L. Staehli 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 210 KB

We investigate the dependence of four-wave mixing response on the photon energy close to the fundamental exciton (X) resonance in GaAs quantum wells. We find that crosspolarised incident fields give rise to a non-linear signal which decays faster at energies below the \(\mathrm{X}\) line centre than

Time resolved studies of intersubband re

Time resolved studies of intersubband relaxation in GaAs/AlGaAs quantum wells below the optical phonon energy using a free electron laser

✍ B.N. Murdin; C.J.G.M. Langerak; M. Helm; P. Kruck; W. Heiss; V. Rosskopf; G. Str 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 287 KB

Pressure and magnetic field effects on t

Pressure and magnetic field effects on the binding energy of excitonic states in single and coupled GaAs–AlGaAs quantum wells

✍ Carlos L. Beltrán Ríos; N. Porras-Montenegro 📂 Article 📅 2005 🏛 Elsevier Science 🌐 English ⚖ 497 KB