首页> 外文期刊>Journal of optics, A. Pure and applied optics: journal of the European Optical Society >A design methodology for directional beaming control by metal slit–grooves structure
【24h】

A design methodology for directional beaming control by metal slit–grooves structure

机译:金属缝槽结构定向波束控制的设计方法

获取原文
获取原文并翻译 | 示例
           

摘要

A design method is proposed for directional beaming control by a subwavelength metal slit surrounded with grooves. With the approach of modulating the phases of the radiation light decoupled by the surrounding grooves from surface plasmon polariton waves, the wavefronts of the radiation light from both sides of the slit are controlled in the beam toward specific directions. The design formulae of the plasmonic structures for directional beaming are deduced based on Huygens' principle. Besides the grating equation being derived, the design requirement for the grating positions is determined. The transmitted field distributions through the designed structures are calculated by the finite-difference time-domain method. The results show that the transmitted light can be directionally beamed efficiently and the beam angle can be controlled accurately within the region of ± 20°.
机译:提出了一种通过凹槽包围的亚波长金属狭缝进行定向波束控制的设计方法。通过调制被周围的沟槽从表面等离激元极化波解耦的辐射光的相位的方法,来自狭缝两侧的辐射光的波阵面被控制在朝向特定方向的光束中。基于惠更斯原理,推导了定向束流的等离激元结构的设计公式。除了导出光栅方程式之外,还确定了光栅位置的设计要求。通过有限差分时域方法计算通过设计结构的透射场分布。结果表明,可以有效地定向发射光束,并且可以在±20°的范围内精确控制光束角。

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