Study of Lasing Characteristics in Strongly Coupled Nano-Cavity Array

Abstract

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.