Optical Study of ZnTe Based 2D and 0D Photonic Structures Containing CdTe/ZnTe Quantum Dots
T. Jakubczyk a, T. Kazimierczuk a, A. Golnik a, P. Bienias a, W. Pacuskia,b, C. Kruse b, D. Hommel b, Ł. Kłopotowski c, T. Wojtowicz c and J.A. Gaj a
a Institute of Experimental Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland
b Institute of Solid State Physics, University of Bremen, Postfach 330 440, D-28334 Bremen, Germany
c Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
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We report on an optical study of ZnTe based microcavity and micropillars. Angle resolved reflectivity studies confirm a high quality of the investigated structure by setting the lower bound on the quality factor Q ≥q 1000, determined from normal incidence reflection spectra. In a microphotoluminescence study, micropillar modes are observed at temperatures of the order of tens of kelvins. For structures grown by a complex growth procedure at two different MBE facilities, an enhancement of photoluminescence in the cavity mode is observed.
DOI: 10.12693/APhysPolA.116.888
PACS numbers: 78.67.Pt