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Modification of photon states in photonic molecules with semiconductor nanocrystals |
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| Authors: | K I Rusakov A A Gladyshchuk Y P Rakovich M Gerlach J F Donegan T M Connolly J J Boland N Gaponik A L Rogach |
| Institution: | (1) Department of Physics, Brest State Technical University, Brest, 224017, Belarus;(2) Department of Physics, Trinity College, Dublin 2, Ireland;(3) Department of Chemistry, Trinity College, Dublin 2, Ireland;(4) Institute of Physical Chemistry, University of Hamburg, D-20146 Hamburg, Germany;(5) Physics Department and CeNS, University of Munich, D-80799 Munich, Germany |
| Abstract: | We report on the coherent coupling of whispering gallery modes (WGMs) in a photonic molecule formed from two melamine formaldehyde spherical microcavities coated with a thin shell of CdTe nanocrystals. Utilizing different excitation conditions, the splitting of the WGM resonances originating from bonding and antibonding branches of the photonic states is observed and a fine structure consisting of very sharp peaks resulting from lifting of the WGM degeneracy has been detected. Observation of optical wavelength switching with controllable spectral position and separation is reported. |
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