Description:

Researchers show that the spectral tailoring of the optical local density of states (LDOS) may be achieved by lithographically designed nanostructures and that the subwavelength mapping of the spectral variation of the optical LDOS is feasible by varying the driving frequency of the effective dipole used in an illumination mode scanning near-field optical microscope (SNOM). This experimental image was recorded for λ = 543. The polarization state corresponds to an orientation of the source dipole along the x axis.

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