光学
石墨烯
太赫兹辐射
传输(电信)
调制(音乐)
实现(概率)
相干控制
二色性
圆二色性
材料科学
光电子学
物理
纳米技术
计算机科学
激光器
电信
统计
数学
化学
声学
结晶学
作者
Zhao Wang,Ming Chen,Xiangyang Wang,Wenfeng Han,Renjie Li,Xuejiao Shi,jinbiao liu,Chuanxin Teng,Shijie Deng,Libo Yuan
出处
期刊:Optics Letters
[The Optical Society]
日期:2023-09-28
卷期号:48 (19): 5153-5153
被引量:1
摘要
The deep application of chiral metasurfaces requires higher flexibility. Herein, we propose a multidimensional tunable chiral graphene metasurface, which uses coherent control to obtain more than 0.8 circular conversion dichroism (CCD) at 2.4 THz as a transmission structure. Its operating frequency can be changed in the 1.3–2.4 THz range, while the amplitude has almost perfect modulation depth in the range of 0–0.8. The mechanism of differential absorption was analyzed through numerical simulation. The device designed is easy to obtain reverse CCD, which is used for unit layout and proves its advantages in near-field imaging. Our work has broadened the path for the development of chiral metasurfaces towards higher degrees of freedom.
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