Mid-IR high-index dielectric Huygens metasurfaces
Author(s)
Ding, Jun; Zhang, Li; Ren, Han; Zhou, Mi; Lin, Yuankun; Hu, Juejun; Zhang, Hualiang; ... Show more Show less
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In this paper, we proposed highly efficient all-dielectric Huygens' metasurfaces working at mid-IR frequencies. The meta-Atom of the designed Huygens' metasurface is a cubic dielectric resonator or its variety, which is made from PbTe that possesses a high refractive index of around 5 at mid-IR frequencies. By overlapping spectrally both the magnetic and electric dipole modes of the high-index dielectric resonators, a full phase coverage of 2π and an equal-magnitude transmission could be achieved, which are essential conditions for realizing a metasurface. Two Huygens' metasurfaces for beam bending are designed with a phase change between two consecutive meta-Atoms of π/4 and π/3, respectively. The simulation results agree well with the design theory.
Date issued
2016-02Department
Massachusetts Institute of Technology. Department of Materials Science and EngineeringJournal
Proceedings of SPIE--the Society of Photo-Optical Instrumentation Engineers
Publisher
SPIE
Citation
Ding, Jun, et al. Mid-IR High-Index Dielectric Huygens Metasurfaces. Edited by Bernd Witzigmann et al. Proceedings of SPIE, 9742, Physics and Simulation of Optoelectronic Devices XXIV; 974211 (2016) © 2016 SPIE
Version: Final published version
ISSN
0277-786X
1996-756X