Metalenses at visible wavelengths: Diffraction-limited focusing and subwavelength resolution imaging
Abstract
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 03, 2016
- Source ID
- 10.1126/science.aaf6644
Entities
People
- Alexander Y. Zhu
- Federico Capasso
- Jaewon Oh
- Mohammadreza Khorasaninejad
- Robert C Devlin
- Wei Ting Chen
Organizations
- Agency for Science, Technology and Research
- Air Force Office of Scientific Research
- Charles Stark Draper Laboratory
- Harvard School of Engineering and Applied Sciences
- Harvard University
- National Science Foundation
- National Science and Technology Council
- University of Waterloo