Enhanced bound states in the continuum in a DBR-assisted photonic crystal slab
Enhanced bound states in the continuum in a DBR-assisted photonic crystal slab
复制标题
DBR 辅助光子晶体板连续体中增强的束缚态
DOI：
10.1364/ao.471587
复制
发表时间：
2022
期刊：
影响因子：
1.9
通讯作者：
Jinsong Xia
中科院分区：
文献类型：
--
作者：
Haocheng Sun;Shuai Yuan;Chen Feng;Jing Zhang;Cheng Zeng;Jinsong Xia
连续谱中的束缚态（BIC）是辐射连续谱中的完全受限共振。单个BIC的新特性已经在各种波系统中得到了非常详细的研究，包括电磁波、声波、水波和固体中的弹性波。在实践中，BIC的性能受到结构的有限尺寸的限制，而多个BIC的组合可以进一步改善共振的局部化。在这项研究中，我们实验证明了在近红外波长的组合的法布里-珀罗和双折射保护BIC采用复合光子晶体系统组成的光子晶体板和分布式布拉格反射器，从而提高了高品质因数。
Bound states in the continuum (BICs) are perfectly confined resonances within the radiation continuum. The novel characteristics of single BICs have been studied in great detail in various wave systems, including electromagnetic waves, acoustic waves, water waves, and elastic waves in solids. In practice, the performance of BICs is limited by the finite size of the structure, while the combination of multiple BICs can further improve the localization of resonances. In this study, we experimentally demonstrate the combination of Fabry–Perot and symmetry-protected BICs at near infrared wavelengths by employing a compound photonic crystal system composed of a photonic crystal slab and a distributed Bragg reflector, resulting in an enhanced high quality factor.