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Magnetooptical Studies of Bulk Diluted Magnetic Semiconductors

100%

Gaj J.

Acta Physica Polonica A

1991

tom 80

nr 2

171-178

Recent developments in physics of large gap II-VI Diluted Magnetic Semiconductors (DMS) studied by means of magnetooptical methods are reviewed. Applicability of the Heisenberg Hamiltonian to describe the ion-carrier interaction in new DMS materials is discussed. The paper includes anisotropy related phenomena, new type of bound magnetic polarons found in Van Vleck paramagnetic (Cd,Fe)Se and discusses application of magnetic field to study kinetics of Raman cascades in DMS.

Far field emission of micropillar and planar microcavities lattice-matched to ZnTe

32%

Jakubczyk T. , Pacuski W. , Duch P. , Godlewski P. , Golnik A. , Kruse C. , Hommel D. , Gaj J.

Open Physics

2011

tom 9

nr 2

428-431

We investigate light emission from ZnTe-based microcavities containing CdTe quantum dots (QDs), with 2D (planar cavity) and 0D (pillar cavities) photonic confinement. The angular distribution from the planar cavity is presented as well as 2D cross-sections of the far field distribution of radiation from the micropillars. The efficient and desirable modification of the isotropic radiation of the QDs is shown for such structures. The diffraction observed is found to be inherent for such experiments with large numerical aperture of the lens and small diameters of the investigated pillars. This diffraction is successfully modeled.