Broadband Light Bending with Plasmonic Nanoantennas
Abstract
The precise manipulation of a propagating wave using phase control is a fundamental building block of optical systems. The wavefront of a light beam propagating across an interface can be modified arbitrarily by introducing abrupt phase changes. We experimentally demonstrated unparalleled wavefront control in a broadband optical wavelength range from 1.0 to 1.9 micrometers. This is accomplished by using an extremely thin plasmonic layer (~λ/50) consisting of an optical nanoantenna array that provides subwavelength phase manipulation on light propagating across the interface. Anomalous light-bending phenomena, including negative angles of refraction and reflection, are observed in the operational wavelength range.
Keywords
REFRACTION
DOI
10.1126/science.1214686
Citation
Science 27 Jan 2012: Vol. 335, Issue 6067, pp. 427
Date of this Version
1-27-2012
Recommended Citation
Ni, Xingjie; Emani, Naresh K.; Kildishev, Alexander V.; Boltasseva, Alexandra; and Shalaev, Vladimir M., "Broadband Light Bending with Plasmonic Nanoantennas" (2012). Birck and NCN Publications. Paper 1259.
http://dx.doi.org/10.1126/science.1214686