Open AccessTerahertz emission based on large‐area photoconductive emitters illuminated via beam interference
Author(s) -
Krauß N.,
Haas M.,
Winnerl S.,
Helm M.,
Dekorsy T.
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2015.2351
Subject(s) - terahertz radiation , common emitter , optoelectronics , photoconductivity , materials science , interference (communication) , optics , grating , interference lithography , fabrication , beam (structure) , physics , telecommunications , computer science , medicine , channel (broadcasting) , alternative medicine , pathology
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.