Dark mode metasurfaces: sensing optical phase difference with subradiant modes and Fano resonances
Ann Roberts, Timothy J Davis, Daniel E Gomez
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | OPTICAL SOC AMER | Published : 2017
We computationally investigate the excitation of subradiant modes and Fano resonances of arrays of simple antenna elements with subwavelength dimensions. We show that periodic arrangements of dipoles on a flat surface provide a highly flexible approach for developing a range of metasurfaces with high sensitivity to both the wavelength of the incident radiation and angle of incidence. This provides a platform for the development of a range of metasurfaces with a wavelength-tunable sensitivity to phase gradients in an incident field.
Related Projects (1)
Awarded by Australian Research Council (ARC)
Australian Research Council (ARC) (DP160100983, FT140100514).