Metalenses at visible wavelengths: Diffraction-limited focusing and subwavelength resolution imaging

Author:

Khorasaninejad Mohammadreza1,Chen Wei Ting1,Devlin Robert C.1,Oh Jaewon12,Zhu Alexander Y.1,Capasso Federico1

Affiliation:

1. Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.

2. University of Waterloo, Waterloo, ON N2L 3G1, Canada.

Abstract

Multifunction planar optics Specially designed two-dimensional (2D) arrays of nanometer-scale metallic antennas, or metasurfaces, may allow bulky optical components to be shrunk down to a planar device structure. Khorasaninejad et al. show that arrays of nanoscale fins of TiO can function as high-end optical lenses. At just a fraction of the size of optical objectives, such planar devices could turn your phone camera or your contact lens into a compound microscope. Maguid et al. interleaved sparse 2D arrays of metal antennas to get multifunctional behavior from the one planar device structure (see the Perspective by Litchinitser). The enhanced functionality of such designed metasurfaces could be used in sensing applications or to increase the communication capacity of nanophotonic networks. Science , this issue pp. 1190 and 1202 ; see also p. 1177

Funder

Air Force Office of Scientific Research

MURI

Charles Stark Draper Laboratory, Inc.

Thorlabs Inc.

Ministry of Science and Technology, Taiwan

Charles Stark Draper Fellowship

Harvard John A. Paulson School of Engineering and Applied Sciences

A*STAR Singapore

National Science Scholarship

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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