在异性质光子晶体板中的连续体中有界状态
Ruey-Lin Chern1, Jui-Chien Chang2, Hsueh-Chi Yang2
1Institute of Applied Mechanics, National Taiwan University, Taipei, 106, Taiwan. chernrl@ntu.edu.tw.
Scientific reports
|August 29, 2023
概括
这项研究探讨了光子晶体中连续体 (BIC) 中的束状态. 我们识别了具有高质量因子和窄线宽的对称性保护,意外和弗里德里希-温特根BIC.
科学领域:
- 光子学 是一个光子学.
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
背景情况:
- 连续体中的边界状态 (BIC) 是独特的波现象,在光学和光子学中具有潜在的应用.
- 光子晶片为控制光传播和实现异国情调的光学状态提供了一个多功能平台.
研究的目的:
- 研究光子晶片中各种类型的BIC的形成和特征.
- 分析材料异构性和光轴方向对BIC属性的影响.
- 在布里卢恩区中心和中心以外的位置探索BIC.
主要方法:
- 理论分析光子晶体板与交替的异构和同构介电材料.
- 基于对称性保护和带结构相互作用的BIC分类.
- 对不同BIC类型的现场模式和质量因素进行数值调查.
主要成果:
- 确定了基于光轴方向分析BIC的三个配置.
- 在Brillouin区域中心观察到对称性保护 (SP) BIC,具有反对称场图案.
- 在Brillouin区域中心和中心之外发现了偶然的BIC和弗里德里希-温特根 (FW) BIC,展示了不同的场图案和带相互作用.
- 取得了极高的质量因子和消失的光谱线宽的研究BICs.
结论:
- 异型光子晶体中光轴的方向显著影响BIC的存在和特性.
- 在这些结构中可以设计SP,意外和FW BIC,为高性能光子设备提供途径.
- 了解BIC形成机制对于设计具有定制功能的先进光学元件至关重要.
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