Metasurfaces, dark modes, and high NA illumination
Lukas Wesemann, Panji Achmari, Kalpana Singh, Evgeniy Panchenko, Timothy D James, Daniel E Gomez, Timothy J Davis, Ann Roberts
OSA CONTINUUM | OPTICAL SOC AMER | Published : 2018
The interaction of a focused beam with a metasurface supporting dark modes is investigated. We show computationally and experimentally that the excitation of dark modes is accompanied by characteristic changes in the reflected Fourier spectrum. This spatial frequency filtering capability indicates an avenue for the all-optical, on-chip detection of phase gradients for biological and other imaging techniques.
Related Projects (1)
Awarded by Australian Research Council
Australian Research Council Discovery Projects (DP160100983) and Future Fellowship scheme (FT140100514).