金属纳米颗粒具有优异的局域增强效应，通过合理设计阵列结构，使得阵列结构的布洛赫波与单个粒子局域等离子共振(LSPR)耦合，形成阵列结构的表面晶格等离子共振(SLR)，能够获得较小的模式体积、较大的品质因数和较高的自发辐射效率。菱形结构的纳米粒子能够有效的集聚电荷，形成较强的偶极子共振，具有优异的激光发射特性、较低的激光阈值和较高的空间一致性。

The metal nanoparticles have excellent local enhancements. The Bloch wave of the array structure couples with single particle localized surface- plasma resonances (LSPRs) by designing array structure, forming arrays support surface lattice resonances (SLRs)，which can obtained a larger quality factor and small pattern volume and increased the efficiency of the spontaneous emission. Diamond structure of nanoparticles can effectively gather charge, form a strong dipole resonance, which can achieve excellent characteristics including lower lasing threshold and higher spatial coherence.