Holographic Metalens for Switchable Focusing of Surface Plasmons

Citation:

Daniel Wintz, Patrice Genevet, Antonio Ambrosio, Alex Woolf, and Federico Capasso. 2015. “Holographic Metalens for Switchable Focusing of Surface Plasmons.” NANO LETTERS, 15, 5, Pp. 3585-3589. Publisher's Version
acs.nanolett.5b01076.pdf4.24 MB

Abstract:

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.
Last updated on 05/26/2020