Far-field and near-field investigation of plasmonic-photonic hybrid laser mode

TL;DR

This paper presents a hybrid plasmonic-photonic nano-laser system that combines a defect mode photonic crystal cavity with a plasmonic nanoantenna, enhancing laser emission and enabling new nano-light source applications.

Contribution

It introduces a novel hybrid dielectric-plasmonic structure that couples photonic crystal cavities with nanoantennas, demonstrating enhanced emission and potential for various optical applications.

Findings

NA reduces the Q-factor of the PC-cavity

NA concentrates and enhances laser emission

Hybrid structure enables new nano-light source applications

Abstract

We report an approach to achieve this goal via build a plasmonic-dielectric photonic hybrid system. We induce a defect mode based photonic crystal (PC) cavity to work as a intermedium storage as well as a near-field light source to excite a plasmonic nanoantenna (NA). In this way, a plasmonic-photonic nano-laser source is created in present experiment. The coupling condition between the two elements is investigated in far-field and near-field level. We found that the NA reduces the Q-factor of the PC-cavity. Meanwhile, the NA concentrates and enhances the laser emission of the PC-cavity. This novel hybrid dielectric-plasmonic structure may open a new avenue in the generation of nano-light sources, which can be applied in areas such as optical information storage, non-linear optics, optical trapping and detection, integrated optics, etc.