Photonics Research, Volume. 10, Issue 9, 2008(2022)
Dynamic bifunctional THz metasurface via dual-mode decoupling
Fig. 1. Schematic diagram of dynamic function switching of THz waves via mode decoupling controlled by external physical field stimulus. When
Fig. 2. (a) Schematic diagram of the unit structure and parameter annotation. (b) Equivalent structure diagram, (c) surface current distribution, and (d) corresponding S-mode field distribution of the unit in the insulating state at normal temperature. (e) Equivalent structure diagram, (f) surface current distribution, and (g) corresponding D-mode field distribution of the unit in the metallic state at high temperature.
Fig. 3. (a) Amplitude of reflected cross-polarization wave in S-mode at room temperature and (b) corresponding phase delay. (c) Amplitude of reflected cross-polarization wave in high-temperature D-mode and (d) corresponding phase delay.
Fig. 4. (a) Spectra of the reflected cross-polarized wave (top) and corresponding phase delay (bottom) for forward illuminated
Fig. 5. Simulation and experimental results of the reflected cross-polarized wave focusing off-axis with tunable focal length when
Fig. 6. Simulation and experimental results of the reflected cross-polarized wave focusing off-axis with large-angle focus deflection when
Fig. 7. (a) Image of a fabricated metasurface sample and (b) its partially enlarged view. (c) Schematic diagram of the experimental setup.
Get Citation
Copy Citation Text
Xuan Cong, Hongxin Zeng, Shiqi Wang, Qiwu Shi, Shixiong Liang, Jiandong Sun, Sen Gong, Feng Lan, Ziqiang Yang, Yaxin Zhang, "Dynamic bifunctional THz metasurface via dual-mode decoupling," Photonics Res. 10, 2008 (2022)
Category: Surface Optics and Plasmonics
Received: Jan. 13, 2022
Accepted: Apr. 21, 2022
Published Online: Aug. 2, 2022
The Author Email: Yaxin Zhang (zhangyaxin@uestc.edu.cn)