Stacked dielectric gratings for sub-wavelength surface field synthesis
A method is developed to enhance the amplitudes of the non-propagating evanescent orders of resonant dielectric gratings. The origin of these resonances is analyzed in detail. The method relies on interactions between stacked gratings with different periods, and so a formalism is developed to model such stacks mathematically. In addition, a theoretical approach is developed to design gratings that enhance or blaze desired orders. These orders, controlled independently by incident fields from...[Show more]
|Collections||ANU Research Publications|
|Source:||Journal of the Optical Society of America B|
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