The Rayleigh Hypothesis for Metasurface Optimization: Anomalous Grazing Refraction by Corrugated Silicon

Author(s):  
Maxim V. Gorkunov ◽  
Alexander A. Antonov
Keyword(s):  
1990 ◽  
Vol 42 (5) ◽  
pp. 2801-2824 ◽  
Author(s):  
Thomas C. Paulick
Keyword(s):  

Radio Science ◽  
1980 ◽  
Vol 15 (4) ◽  
pp. 723-732 ◽  
Author(s):  
P. M. van den Berg ◽  
J. T. Fokkema

2021 ◽  
Vol 2015 (1) ◽  
pp. 012005
Author(s):  
A A Antonov ◽  
M V Gorkunov

Abstract We design metasurfaces based on silicon films with smooth relief described by several Fourier harmonics and study their ability to redirect the refracted light over a wide angular range controlled by subtle variations of the optical setup. We use semi-analytical approach based on the Rayleigh hypothesis as well as full-scale numerical solutions to optimize the relief shape. To illustrate the reconfigurability potential, we design metasurfaces efficiently redirecting the refracted light from 83° to −73° with respect to the normal, when the angle of incidence is varied from 0° to 2°, and from 80° to −74°, when the substrate permittivity is altered from 2.3 to 2.2.


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