2014/06/03 by Mehdi Veysi, Caner Guclu, Ozdal Boyraz +1
Chemistry · Engineering · Materials Science · Physics and Astronomy · #Advanced Antenna and Metasurface Technologies #Anisotropy #Birefringence #Chemistry #Lens (geology) #Materials science #Metamaterials and Metasurfaces Applications #Optics #Optoelectronics #Physics #Plasmon #Plasmonic and Surface Plasmon Research #Polarization (electrochemistry) #Polarizer #Thin lens #physics.optics
paper · pdf · doi:10.1364/josab.32.000318
published as J. Opt. Soc. Am. B 32, 318 (2015)
arxiv created 2014/06/03 · openalex publication_date 2015/01/20 · arxiv updated 2015/06/09 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
The possibility of integration of two important categories of optical components, i.e., circular polarizer and lens, into a thin plasmonic metasurface is examined, for the realistic case when metal losses cannot be neglected, for example when operating in the visible spectrum, or at infrared when non-noble metals are used. We introduce a metasurface made of nanoantennas that offer enough degrees of freedom to control both amplitude and phase of the reflection coefficient. First a theoretical formulation is developed and then an optimal design for a polarizing lens at mid-infrared wavelengths near 4.3 μm is presented. A two-dimensional array of Y-shaped nanoantennas with polarization-dependent and spatially varying phase response offers the possibility of balancing the losses experienced by the x- and y-polarized incident fields and is the basis for such a compact polarizing lens.