基于连续体中受约束状态的连贯发光元表面
Soheil Farazi1, Srinivas Tadigadapa1
1Department of Electrical and Computer Engineering, Northeastern University, Boston, MA 02115, USA.
Nanophotonics (Berlin, Germany)
|December 5, 2024
概括
研究人员使用介电元表面开发了新的中红外连贯热发射器. 这一突破通过克服自发发射器的局限性,使先进的光谱,传感和通信技术成为可能.
科学领域:
- 光子学和元材料研究
- 中红外技术 中红外技术
- 固态发光器 固态发光器
背景情况:
- 当前的中红外光源往往是自发发射器,限制了光谱,传感和通信中的应用.
- 在中红外 (MIR) 范围内,对固态调可连贯光发射器的需求越来越大.
研究的目的:
- 为了展示一个新的连贯热发射器类别,在MIR波长模式下运行.
- 介绍第一个在MIR波长的连续体 (BIC) 中的off-Γ弗里德里希-温特根束状态的实现.
主要方法:
- 在音声基板上制造介电元面.
- 发射频谱的数值分析以确定共振干扰和BIC形成.
- 通过反射和辐射测量辐射谱的实验测量.
主要成果:
- 在MIR波长 (>7μm) 的连续体中证明了非Γ弗里德里希-温特根束状态.
- 在元表面内观察局部场增强.
- 在BIC共振附近测量时间连贯的发射峰值.
结论:
- 这项工作提出了一种实现MIR连贯光发射器的新方法.
- 在MIR超表面中展示的弗里德里希-温特根BIC为下一代光子设备开辟了道路.
- 这些发现对光谱,传感和通信技术的进步有重大影响.
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