• 主题
高级搜索  >
历史搜索 清空历史
首页> 中文期刊> 《光：科学与应用（英文版）》 >Terahertz near-field microscopy based on an air-plasma dynamic aperture

Terahertz near-field microscopy based on an air-plasma dynamic aperture

         
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Terahertz(THz)near-field microscopy retains the advantages of THz radiation and realizes sub-wavelength imaging,which enables applications in fundamental research and industrial fields.In most THz near-field microscopies,the sample surface must be approached by a THz detector or source,which restricts the sample choice.Here,a technique was developed based on an air-plasma dynamic aperture,where two mutually perpendicular air-plasmas overlapped to form a cross-filament above a sample surface that modulated an incident THz beam.THz imaging with quasi sub-wavelength resolution(approximately λ/2,where λ is the wavelength of the THz beam)was thus observed without approaching the sample with any devices.Damage to the sample by the air-plasmas was avoided.Near-field imaging of four different materials was achieved,including metallic,semiconductor,plastic,and greasy samples.The resolution characteristics of the near-field system were investigated with experiment and theory.The advantages of the technique are expected to accelerate the advancement of THz microscopy.

著录项

相似文献

  • 中文文献
  • 外文文献
  • 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