Holographic Metalens for Switchable Focusing of Surface Plasmons | Zendy

Daniel Wintz | Zendy; Patrice Genevet | Zendy; Antonio Ambrosio | Zendy; Alex Woolf | Zendy; Federico Capasso | Zendy

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Holographic Metalens for Switchable Focusing of Surface Plasmons

Author(s) -

Daniel Wintz,

Patrice Genevet,

Antonio Ambrosio,

Alex Woolf,

Federico Capasso

Publication year - 2015

Publication title -

nano letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 4.853

H-Index - 488

eISSN - 1530-6992

pISSN - 1530-6984

DOI - 10.1021/acs.nanolett.5b01076

Subject(s) - holography , plasmon , optics , surface plasmon , polarization (electrochemistry) , wavefront , surface plasmon polariton , wavelength , plasmonic lens , ray , optoelectronics , dielectric , materials science , excitation , lens (geology) , physics , chemistry , quantum mechanics

Surface plasmons polaritons (SPPs) are light-like waves confined to the interface between a metal and a dielectric. Excitation and control of these modes requires components such as couplers and lenses. We present the design of a new lens based on holographic principles. The key feature is the ability to switchably control SPP focusing by changing either the incident wavelength or polarization. Using phase-sensitive near-field imaging of the surface plasmon wavefronts, we have observed their switchable focusing and steering as the wavelength or polarization is changed.

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