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Beam focusing in reflections from flat subwavelength diffraction gratings

Autor
Cheng, Y.; Redondo, J.; Staliunas, K.
Tipus d'activitat
Article en revista
Revista
Physical review A
Data de publicació
2014-03-10
Volum
89
Número
3
Pàgina inicial
033814-1
Pàgina final
033814-5
DOI
https://doi.org/10.1103/PhysRevA.89.033814 Obrir en finestra nova
Projecte finançador
CONTROL DE LA DIFRACCON DE LA LUZ EN MEDIOS MODULADOS
Repositori
http://hdl.handle.net/2117/26933 Obrir en finestra nova
URL
http://journals.aps.org/pra/abstract/10.1103/PhysRevA.89.033814 Obrir en finestra nova
Resum
We predict that narrow beams, reflecting from flat subwavelength diffraction gratings, can focus. The effect is shown for the beams of electromagnetic radiation; however, it should be observable for beams of waves of arbitrary nature (microwaves, surface plasmons, and acoustic and mechanical waves). We present analytical estimations of the focusing performance obtained by multiple scattering calculations and demonstrate the focusing effect numerically for an optical system (reflections from an a...
Citació
Cheng, Y.; Redondo, J.; Staliunas, K. Beam focusing in reflections from flat subwavelength diffraction gratings. "Physical review A", 10 Març 2014, vol. 89, núm. 3, p. 033814-1-033814-5.
Paraules clau
Analytical Estimations, Dielectric Cylinder, Finite-difference Time-domain Calculations, Focusing Effect, Focusing Performance, Multiple Scattering Calculations, Sub-wavelength, Surface Plasmons
Grup de recerca
DONLL - Dinàmica no Lineal, Òptica no Lineal i Làsers

Participants

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