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Strong optical confinement and multimode emission of organic photonic dots
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) (a) Atomic force micrograph of a photonic dot in a microcavity (with a base area of and a smaller top area). (b) Schematic profile of a laterally structured microcavity with the two 5.5 pair DBRs. The sketch depicts the lens shape of the organic layer and the top DBR, which influences the optical confinement.

Image of FIG. 2.
FIG. 2.

(Color online) (a) Near field transmission of a photonic dot (CCD area: ). The fundamental cavity mode is placed in the dot center at . With increasing lateral shift, the modes shift to higher energies. Outside the photonic dot, the spectrum is dominated by the DBR stop-band and another dielectric cavity mode at . 80 horizontal pixels correspond to . After adjusting the topographic profile of the organic layer (b), the transfer matrix calculation models most features of the experimental data (c). The infinite extension of the cavity in this model prevents a simulation of the confinement of the modes within the photonic dot.

Image of FIG. 3.
FIG. 3.

(Color online) Spectrally resolved emission from a photonic dot for two perpendicular polarizer angles, (a) 0° and (b) 90° (CCD area: ). (c) The Fourier transform of a calculated internal electric field distribution for an organic photonic dot with thickness and diameter simulates the emission pattern (plotted in linear scale).


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Strong optical confinement and multimode emission of organic photonic dots