An all-optical, sub-wavelength terahertz characterization technique based on an ultrathin-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. © 2014 OSA.
Rectangular-shaped sub-wavelength terahertz beam profiling via an all-optical knife-edge technique
Clerici M.;
2014-01-01
Abstract
An all-optical, sub-wavelength terahertz characterization technique based on an ultrathin-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. © 2014 OSA.
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