Title :
Observation of whispering gallery modes and directional emission from spherical microcavities integrated with TTBC dye J-aggregates
Author :
Savateeva, Diana ; Melnikau, Dzmitry ; Rakovich, Yury P.
Author_Institution :
Centro de Fis. de Mater., Donostia, Spain
Abstract :
We report on the resonant modes in micro-luminescence spectra of whispering gallery microcavities combining dielectric microspheres and J-aggregates of cyanine dye. We use fluorescence lifetime imaging spectroscopy to study modification of spontaneous emission rate in J-aggregates attached to a microcavity. Directional emission of light from the integrated microcavity is experimentally shown in this work and attributed to the photonic jets generated in the microsphere. The results show that whispering gallery resonators with dye nano-aggregates can be used as micro-organic light-emitting devices.
Keywords :
aggregates (materials); dyes; fluorescence; laser cavity resonators; microcavities; photoluminescence; whispering gallery modes; TTBC dye J-aggregates; cyanine dye; dielectric microspheres; directional emission; dye nanoaggregates; fluorescence lifetime imaging spectroscopy; integrated microcavity; microluminescence spectra; photonic jets; resonant modes; spherical microcavities; spontaneous emission rate; whispering gallery microcavities; whispering gallery modes; whispering gallery resonators; Absorption; Films; Measurement by laser beam; Microcavities; Photonics; Surface emitting lasers; J-aggregates; directional emission; excitons; microcavities; whispering gallery modes;
Conference_Titel :
Transparent Optical Networks (ICTON), 2012 14th International Conference on
Conference_Location :
Coventry
Print_ISBN :
978-1-4673-2228-7
Electronic_ISBN :
2161-2056
DOI :
10.1109/ICTON.2012.6253819
