...
首页> 外文期刊>Japanese Journal of Applied Physics. Part 2, Letters & Express Letters >Terahertz Near-Field Imaging Using Enhanced Transmission through a Single Subwavelength Aperture
【24h】

Terahertz Near-Field Imaging Using Enhanced Transmission through a Single Subwavelength Aperture

机译:太赫兹近场成像,通过单个亚波长光圈增强传输

获取原文
获取原文并翻译 | 示例
           

摘要

We demonstrate terahertz (THz) near-field imaging using resonantly enhanced transmission of THz-wave radiation (λ ~200 μm) through a bull's eye structure (a single subwavelength aperture surrounded by concentric periodic grooves in a metal plate). The bull's eye structure shows extremely large enhanced transmission, which has the advantage for a single subwavelength aperture. The spatial resolution for the bull's eye structure (with an aperture diameter d = 100 μm) is evaluated in the near-field region, and a resolution of 50 μm (corresponding to λ/4) is achieved. We obtain the THz near-field images of the subwavelength metal pattern with a spatial resolution below the diffraction limit.
机译:我们通过牛眼结构(单个亚波长孔径被金属板中的同心周期凹槽包围),利用太赫兹(THz)辐射(λ〜200μm)的共振增强传输来演示太赫兹(THz)近场成像。牛眼结构显示出极大的增强传输,这对于单个亚波长孔径具有优势。在近场区域评估牛眼结构(孔径直径d = 100μm)的空间分辨率,并获得50μm的分辨率(对应于λ/ 4)。我们获得具有低于衍射极限的空间分辨率的亚波长金属图案的太赫兹近场图像。

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