Wave front engineering from an array of thin aperture antennas.

We propose an ultra-thin metamaterial constructed by an ensemble of the same type of anisotropic aperture antennas with phase discontinuity for wave front manipulation across the metamaterial. A circularly polarized light is completely converted to the cross-polarized light which can either be bent or focused tightly near the diffraction limit. It depends on a precise control of the optical-axis profile of the antennas on a subwavelength scale, in which the rotation angle of the optical axis has a simple linear relationship to the phase discontinuity. Such an approach enables effective wave front engineering within a subwavelength scale.

[1]  Federico Capasso,et al.  Ultra-thin plasmonic optical vortex plate based on phase discontinuities , 2012 .

[2]  Federico Capasso,et al.  Out-of-plane reflection and refraction of light by anisotropic optical antenna metasurfaces with phase discontinuities. , 2012, Nano letters.

[3]  David R. Smith,et al.  Controlling Electromagnetic Fields , 2006, Science.

[4]  Nader Engheta,et al.  Antenna-Guided Light , 2011, Science.

[5]  N I Zheludev,et al.  Asymmetric propagation of electromagnetic waves through a planar chiral structure. , 2006, Physical review letters.

[6]  L. Marrucci,et al.  Optical spin-to-orbital angular momentum conversion in inhomogeneous anisotropic media. , 2006, Physical review letters.

[7]  Federico Capasso,et al.  Modeling nanoscale V-shaped antennas for the design of optical phased arrays , 2012 .

[8]  A. Kildishev,et al.  Broadband Light Bending with Plasmonic Nanoantennas , 2012, Science.

[9]  R. Adato,et al.  Hybridized nanocavities as single-polarized plasmonic antennas. , 2009, Optics express.

[10]  Y. Wang,et al.  Plasmon-induced transparency in metamaterials. , 2008, Physical review letters.

[11]  H. Lezec,et al.  Extraordinary optical transmission through sub-wavelength hole arrays , 1998, Nature.

[12]  Do-Hoon Kwon,et al.  Optical planar chiral metamaterial designs for strong circular dichroism and polarization rotation. , 2008, Optics express.

[13]  J. Pendry,et al.  Hiding under the carpet: a new strategy for cloaking. , 2008, Physical review letters.

[14]  F. Gori.  Measuring Stokes parameters by means of a polarization grating. , 1999, Optics letters.

[15]  Luis Martín-Moreno,et al.  Light passing through subwavelength apertures , 2010 .

[16]  R. Shelby,et al.  Experimental Verification of a Negative Index of Refraction , 2001, Science.

[17]  N. Yu,et al.  Light Propagation with Phase Discontinuities: Generalized Laws of Reflection and Refraction , 2011, Science.

[18]  Xiang Zhang,et al.  Negative refractive index in chiral metamaterials. , 2009, Physical review letters.

[19]  E. Hasman,et al.  Geometric doppler effect: spin-split dispersion of thermal radiation. , 2010, Physical review letters.

[20]  H P Urbach,et al.  Electromagnetic spin-orbit interactions via scattering of subwavelength apertures. , 2010, Physical review letters.

[21]  Ewold Verhagen,et al.  Electric and magnetic dipole coupling in near-infrared split-ring metamaterial arrays. , 2009, Physical review letters.

[22]  J. Pendry,et al.  Magnetism from conductors and enhanced nonlinear phenomena , 1999 .

[23]  F Schmidt,et al.  Magnetic metamaterials at telecommunication and visible frequencies. , 2005, Physical review letters.

[24]  M. Qiu,et al.  Enhanced transmission through periodic arrays of subwavelength holes: the role of localized waveguide resonances. , 2006, Physical review letters.

[25]  Willie J Padilla,et al.  Perfect metamaterial absorber. , 2008, Physical review letters.

[26]  Esteban Moreno,et al.  Transmission of light through a single rectangular hole. , 2005, Physical review letters.

[27]  K. Kavanagh,et al.  Strong polarization in the optical transmission through elliptical nanohole arrays. , 2004, Physical review letters.

[28]  J. O’Hara,et al.  Antireflection coating using metamaterials and identification of its mechanism. , 2010, Physical review letters.