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Article Dans Une Revue New Journal of Physics Année : 2018

Active control of radiation beaming from Tamm nanostructures by optical microscopy

Résumé

Active control of the radiation orientation (beaming) of a metallic antenna has been reported by various methods, where the antenna excitation position was tuned with a typical 50 nm precision by a near-field tip or an electron-beam. Here we use optical microscopy to excite and analyze the fluorescence of a layer of nanocrystals embedded in an optical Tamm state nanostructure (metallic disk on top of a Bragg mirror). We show that the radiation pattern can be controlled by changing the excitation spot on the disk with only micrometer precision, in a manner which can be well described by numerical simulations. A simplified analytical model suggests that the propagation length of the in-plane confined optical modes is a key parameter for beaming control.
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hal-01768736 , version 1 (17-04-2018)

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Fu Feng, Clémentine Symonds, Catherine Schwob, Joël Bellessa, Agnès Maitre, et al.. Active control of radiation beaming from Tamm nanostructures by optical microscopy. New Journal of Physics, 2018, 20, pp.033020. ⟨10.1088/1367-2630/aaaf93⟩. ⟨hal-01768736⟩
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