Rectangular-shaped sub-wavelength terahertz beam profiling via an all-optical knife-edge technique

HO S. P. , MAZHOROVA A., SHALABY M., PECCIANTI M., CLERICI M., PASQUAZI A., ...More

Conference on Lasers and Electro-Optics (CLEO), San-Jose, Costa Rica, 8 - 13 June 2014 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • City: San-Jose
  • Country: Costa Rica

Abstract

An all-optical, sub-wavelength terahertz characterization technique based on an ultra-thin-knife-edge is demonstrated employing ultraviolet-pulse to project the blade image on a ZnTe crystal, where the free carriers excited on a blade-shaped area act as field-shield.