首页> 外文期刊>Nano letters >Plasmon Dispersion in Coaxial Waveguides from Single-Cavity Optical Transmission Measurements
【24h】

Plasmon Dispersion in Coaxial Waveguides from Single-Cavity Optical Transmission Measurements

机译:从单腔光传输测量的同轴波导中的等离子体色散

获取原文
获取原文并翻译 | 示例
           

摘要

We determine the plasmon dispersion relation in coaxial waveguides composed of a circular channel separating a metallic core and cladding. Optical transmission measurements are performed on isolated coaxial nanoapertures fabricated on a Ag film using focused ion-beam lithography. The dispersion depends strongly on the dielectric material and layer thickness. Our experimental results agree well with an analytical model for plasmon dispersion in coaxial waveguides. We observe large phase shifts at reflection from the end facets of the coaxial cavity, which strongly affect the waveguide resonances and can be tuned by changing the coax geometry, composition, and surrounding dielectric index, enabling coaxial cavities with ultrasmall mode volumes.
机译:我们确定了由分隔金属芯和包层的圆形通道组成的同轴波导中的等离激元色散关系。使用聚焦离子束光刻技术,对在Ag膜上制造的隔离同轴纳米孔进行光传输测量。色散很大程度上取决于介电材料和层厚度。我们的实验结果与同轴波导中的等离激元色散分析模型非常吻合。我们观察到同轴腔端面反射产生的大相移,这会严重影响波导谐振,并且可以通过更改同轴电缆的几何形状,成分和周围的介电指数来进行调谐,从而实现具有超小模式体积的同轴腔。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号