Abstract
We demonstrate the existence of plasmon-induced transparency (PIT) like spectral response in a hybrid system of plasmonic antenna array coupled with dielectric silicon array. After tuning the period of the silicon array, different resonant wavelength with high quality factor (range from 50 to 400) can be achieved. When the subradiant resonator (dielectric array) get close to the superradiant resonator (metallic nanoantenna array), a peak of PIT comes into emerging between the two asymmetric resonant dips. Meanwhile, the far-field emission pattern of the PIT peak was also observed with a highly directivity that was neatly two times than a same period of plasmonic Au array and the backward scattering was obviously suppressed. Our works provide productive insight into the light manipulation with near-field electromagnetic coupling.
Published Version
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