基于石墨烯等离子体的电调等级光子晶体镜头
Chenglong Wang1, Xiang Guo2, Xidong Wu3
1College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, 310027, China.
Scientific reports
|October 31, 2024
概括
我们开发了一种电调可调的石墨烯镜头,可以在麦克斯韦和麦克斯韦之间切换.
科学领域:
- 光子学和光学 在光子学和光学.
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 控制表面等离子极子子 (SPP) 属性对于主动转换光学至关重要.
- 石墨烯可调节的化学潜力为动态光学设备提供了一个平台.
- 现有的有效介质理论 (EMT) 在准确描述光子晶体 (PC) 方面存在局限性.
研究的目的:
- 提出并研究使用石墨烯的电调 2D 级光子晶体 (GPC) 镜头.
- 通过调整石墨烯的化学潜力来证明麦克斯韦的鱼眼和卢内堡镜头之间的连续转换.
- 为了引入和验证一个通用有效介质理论 (GEMT) 准确的PC均化.
主要方法:
- 制造一个石墨烯单层在一个后门结构与纳米图案的门绝缘体.
- 通过门电压对石墨烯的化学潜力进行电调,以控制SPP模式指数.
- 开发和应用GEMT来表征GPC镜头,并根据严格的固有值解决方案进行验证.
主要成果:
- 石墨烯GPC镜头可以在Maxwell的鱼眼和Luneburg镜头配置之间连续转换.
- 这种转换是通过在其非线性化学潜能区域中运行石墨烯并调整门电压来实现的.
- 与PC同质化的传统EMT相比,GEMT显示了更好的准确性.
结论:
- 拟议的石墨烯GPC镜头为芯片上的光操纵提供了一种新的方法,具有电气可调性.
- 这项研究验证了使用基于石墨烯的光子设备的动态转换光学的可行性.
- GEMT为设计这些纳米结构光学设备提供了更准确的理论框架.
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