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Toward Better Light-Confinement in Micropillar Cavities

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

Acta Physica Polonica A

2011

vol. 120

issue 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.

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.

Acta Physica Polonica A

2012

vol. 122

issue 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.

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2 Acta Physica Polonica A

1 2012

1 2011

2 Gietka K.

2 Golnik A.

2 Kossacki P.

2 Pacuski W.

1 Hommel D.

1 Jakubczyk T.

1 Janik E.

1 Kobak J.

1 Kruse C.

1 Rousset J.

1 Słupiński T.

1 Ściesiek M.

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Toward Better Light-Confinement in Micropillar Cavities

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