Blazing evanescent grating orders: a spectral approach to beating the Rayleigh limit.
نویسندگان
چکیده
We develop a way to enhance the amplitudes of the nonpropagating evanescent orders of resonant dielectric gratings. We use this blazing to design gratings with spectra tailored to generate steerable sub-Rayleigh field concentrations on a surface. We investigate the enhancement and customization of evanescent fields necessary to create a virtual and passive scanning probe with no moving parts. Spot size can be decreased 1 order of magnitude below the free-space Rayleigh limit.
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ورودعنوان ژورنال:
- Optics letters
دوره 35 17 شماره
صفحات -
تاریخ انتشار 2010