Addressable subwavelength grids of confined light in a multislotted nanoresonator

In this letter, we fabricate a multislotted optical nanoresonator with several spatial field distributions which are all addressable by the wavelength. The reported structure consists in an array of evanescently coupled single mode photonic crystal nanocavities. By using a scanning near-field optical microscope, we quantify the morphology of the different optical mode volumes and show that they consist in grids of light confined at the subwavelength scale. (C) 2011 American Institute of Physics. [doi:10.1063/1.3555489]