Toward Better Light-Confinement in Micropillar Cavities
M. Ściesiek a, K. Gietka a, A. Golnik a, P. Kossacki a, T. Jakubczyka,b, W. Pacuskia,b, C. Kruse b and D. Hommel b
aInstitute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland
bInstitute of Solid State Physics, University of Bremen, Postfach 330 440, D-28334 Bremen, Germany
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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.
DOI: 10.12693/APhysPolA.120.877
PACS numbers: 78.67.Pt, 42.70.Qs, 42.79.Fm, 78.66.Hf