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1 Acta Physica Polonica A

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MBE Growth of CdTe/ZnTe Quantum Dots with Single Mn Ions

100%

Gietka K. , Kobak J. , Rousset J. , Janik E. , Słupiński T. , Kossacki P. , Golnik A. , Pacuski W.

nr 6

1056-1058

We report MBE growth and properties of samples with self assembled quantum dots with single manganese ions and low density of quantum dots. Manganese concentration was calibrated using magneto-reflectivity measurements and the giant Zeeman effect in (Cd,Mn)Te and (Zn,Mn)Te layers. Successful incorporation of Mn in the CdTe/ZnTe quantum dots was confirmed using micro-photoluminescence measurements: single manganese ion in quantum dot manifests in sixfold splitting of exciton emission lines due to s, p-d exchange interaction.

Toward Better Light-Confinement in Micropillar Cavities

100%

Ściesiek M. , Gietka K. , Golnik A. , Kossacki P. , Jakubczyk T. , Pacuski W. , Kruse C. , Hommel D.

Acta Physica Polonica A

2011

tom 120

nr 5

877-879

We report on a two-step etching of ZnTe based micropillars. We demonstrate applicability of the technology and we analyze the optical properties of obtained structures. Microphotoluminescence spectra of individual micropillars show a typical mode pattern that confirms a successful growth of photonic structures. The reflectivity and photoluminescence spectra of a planar microcavity measured for various incident angles show that additional side distributed Bragg reflectors will be important for the further enhancement of photon confinement in micropillar cavity.