Normal-incidence scattering of surface plasmon polaritons by one-dimensional nanoindentations: a multimodal description
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- López-Tejeira, F., García-Vidal, F. & Martín-Moreno, L. Appl. Phys. A (2007) 89: 251. doi:10.1007/s00339-007-4103-9
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In this paper a theoretical study is made on the scattering of surface plasmon polaritons by a finite periodic array of one-dimensional rectangular grooves. Our approach is based on a multimodal expansion technique. We have found that the geometrical parameters of the array can be properly tuned to achieve optimal performance of the structure either as a Bragg reflector or as a converter of surface plasmon polaritons into light. Most importantly, such functionalities can be fully achieved with a relatively small number of grooves.