Acta Optica Sinica, Volume. 44, Issue 10, 1026008(2024)
Multifunctional Manipulation of Electromagnetic Waves Based on Composite-Phase Metasurfaces (Invited)
Fig. 1. Schematics of phase. (a) Resonance phase is modulated by changing geometric size to achieve
Fig. 2. Single-function metasurface. (a) SEM images of a resonant phase metasurface consisting of V-shaped antennas and wavefronts for sub-wave sources with different resonance phases[9]; (b) schematic of an efficient meta-coupler and near-field test results[17]; (c) far-field experimental test results of an anomalous deflector consisting of gold nanorods of different sizes and its sample images[18]; (d) SEM photos and schematic diagram of polarization-insensitive meta-lens achieved by modulating propagation phase by varying diameter of TiO2 dielectric rods[62]; (e) schematic diagram of a geometric phase metasurface consisting of a single metal layer of rotating metal nanorods to realize photonic spin Hall effect in near infrared band[67]; (f) photo of highly efficient all-dielectric meta-lens sample operating in visible band and characterization of imaging quality in different wave bands[23]
Fig. 3. Multifunctional imaging. (a) Experimental results of chiral holography based on an all-dielectric composite phase metasurface and its sample photos[47]; (b) experimental results of bright- and dark-field imaging based on a composite phase metasurface[68]; (c) schematic diagram of a chiral holographic imaging device with spin decoupling achieved by designing non-mirror symmetric chiral meta-atoms[70]; (d) schematic diagram of deep-ultraviolet dual holographic imaging[48]
Fig. 4. Multifunctional meta-couplers. (a) Schematic diagram of an efficient microwave near- and far-field spin decoupling device and test structure[58]; (b) schematic diagram of an efficient terahertz near-field bifunctional device and experimental test results of surface wave focusing and deflection in different regions[56]; (c) near- and far-field bifunctional integration in 850-950 nm band[72]; (d) efficient coupling between a near-field bifunctional device in optical band and an on-chip optical waveguide[57]
Fig. 5. Multifunctional wavefront modulation devices. (a) Schematic diagram and test results of a device converting incident light with different chirality into vortex light with different orders[50]; (b) schematic diagram of transmissive bifocal spin decoupling consisting of V-shaped nanopore arrays[53]; (c) reflective spin decoupling device based on a two-layer composite phase metasurface realizing different functions at different frequencies[74]; (d) efficient spin decoupling holography in terahertz band achieved using composite phase based on efficient meta-atoms with a high aspect ratio (20∶1) [75]; (e) schematic diagram of a terahertz all-dielectric transmissive spin decoupling vector Bessel beam generator and its test results[76]; (f) near-infrared reflective vector spin decoupling optical device for different orders and test results for rod and angular polarization vector vortex light[77]
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Zhuo Wang, Qiong He, Shulin Sun, Lei Zhou. Multifunctional Manipulation of Electromagnetic Waves Based on Composite-Phase Metasurfaces (Invited)[J]. Acta Optica Sinica, 2024, 44(10): 1026008
Category: Physical Optics
Received: Dec. 26, 2023
Accepted: Jan. 30, 2024
Published Online: Apr. 26, 2024
The Author Email: Qiong He (qionghe@fudan.edu.cn), Shulin Sun (sls@fudan.edu.cn), Lei Zhou (phzhou@fudan.edu.cn)
CSTR:32393.14.AOS231991