Aberration-free ultrathin flat lenses and axicons at telecom wavelengths based on plasmonic metasurfaces.
The concept of optical phase discontinuities is applied to the design and demonstration of aberration-free planar lenses and axicons, comprising a phased array of ultrathin subwavelength-spaced optical antennas. The lenses and axicons consist of V-shaped nanoantennas that introduce a radial distribution of phase discontinuities, thereby generating respectively spherical wavefronts and nondiffracting Bessel beams at telecom wavelengths. Simulations are also presented to show that our aberration-free designs are applicable to high-numerical aperture lenses such as flat microscope objectives.
School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States.
Francesco
F
Aieta
Patrice
P
Genevet
Mikhail A
MA
Kats
Nanfang
N
Yu
Romain
R
Blanchard
Zeno
Z
Gaburro
Federico
F
Capasso
D016477:Artifacts; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007909:Lenses; D008962:Models, Theoretical; D012031:Refractometry / Q000295:instrumentation*; D020349:Surface Plasmon Resonance / Q000295:instrumentation*; D013499:Surface Properties; D013685:Telecommunications / Q000295:instrumentation*