Open AccessHelicity-dependent metasurfaces employing receiver-transmitter meta-atoms for full-space wavefront manipulation
Author(s) -
Haisheng Hou,
Guangming Wang,
Haipeng Li,
Wenlong Guo,
Tong Cai
Publication year - 2020
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.402474
Subject(s) - optics , reflection (computer programming) , wavefront , transmitter , physics , transmission (telecommunications) , refraction , helicity , phase (matter) , phase conjugation , negative refraction , metamaterial , computer science , telecommunications , laser , channel (broadcasting) , particle physics , quantum mechanics , programming language
Manipulating orthogonal circularly polarized (CP) waves independently in both reflection and transmission modes in a single metasurface is pivotal. However, independently controlling CP waves with different polarizations is difficult especially for both reflection and transmission modes. Here, we designed a receiver-transmitter metasurface with helicity-dependent reflection and transmission properties. Our design breaks the fixed phases of the geometry metasurface-carrying Pancharatnam-Berry operators by combining the receive and transmit antennas. To verify the effectiveness of the modulation, we designed three linear deflectors with: (a) reflection phase gradient, (b) transmission phase gradient, and (c) both of gradients to achieve anomalous reflection, anomalous refraction, and simultaneous anomalous reflection and refraction, respectively. As proof of the concept, a bifunctional meta-device with functions of anomalous reflection and focusing transmission for different incident CP waves was simulated and measured. Our findings offer an easy strategy for achieving arbitrary bifunctional CP devices.