微球腔激光偏振态受CdSe纳米带晶向影响的研究

打开文本图片集

中图分类号：O433文献标志码：A

Abstract：Nanoscale light sourcesare key components on-chip integrated optical communication. Since the polarization angle is one the important characteristics coherent light sources， understing the influence polarization is crucial component preparation. In this paper， we present a nanoscale light source structure with separate gain medium microsphere cavities to study the polarization efect the crystal structure on the light source.By exploiting the full symmetry the microspheres， the selective property the microcavity structure on polarization is eliminated. Furthermore， by changing the relative angle the single-crystal CdSe nanoribbons to the pump light， the influence the pump light is eliminated the laser radiation with a polarization ratio 1.7 is obtained. Thus， it is shown that the polarized state the microcavity radiation is determined by the crystallographic orientation the CdSe nanoribbons the gain material. The results deepen the understing the role nanomaterials in the polarization characteristics micro-nano devices provide a theoretical route to the construction practical micro-lasers.

Keywords： CdSe nanoribbons; EHP gain; WGM multimode laser; polarization state

引言

基于纳米材料所实现的微纳激光器因其小型化、易集成等诸多优点，而引起广泛的研究及关注，并在波导[1]、光源[2-6]及光电探测器等领域有着众多应用。（剩余8160字）