Title :
Terahertz emission based on large-area photoconductive emitters illuminated via beam interference
Author :
Krauss, N. ; Haas, M. ; Winnerl, S. ; Helm, M. ; Dekorsy, T.
Author_Institution :
Phys. Dept., Univ. of Konstanz, Konstanz, Germany
Abstract :
The use of beam interference in combination with a large-area photoconductive emitter for the generation of pulsed terahertz (THz) radiation is presented. An interference pattern with a period twice that of the THz emitter is generated with a transmission phase grating, placed directly in front of the photoconductive emitter. This way, efficient THz generation is achieved with a single metallisation layer and a single lithography step in the fabrication technology of the THz emitter.
Keywords :
diffraction gratings; light interference; lithography; metallisation; microwave photonics; photoconducting devices; terahertz wave generation; THz generation; beam interference; interference pattern; large-area photoconductive emitters; pulsed terahertz radiation; single lithography step; single metallisation layer; terahertz emission; transmission phase grating;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2015.2351
