New device for continuous-wave THz emission: Large area emitter

Author

Garcia-Munoz, Luis Enrique ; Dohler, Gottfried H ; Montero-de-Paz, Javier ; Ugarte-Munoz, Eduardo ; Rivera-Lavado, Alejandro ; Preu, S. ; Malzer, Stefan ; Bauerschmidt, Sebastian ; Gonzalez-Posadas, Vicente ; Segovia-Vargas, Daniel

Author_Institution

Signal Theor. & Commun. Dept., Carlos III Univ. of Madrid, Leganes, Spain

fYear

2013

fDate

8-12 April 2013

Firstpage

529

Lastpage

532

Abstract

We discuss two different approaches to overcome the power limitations of CW THz generation imposed to conventional photomixers. The increase in power achievable by using arrays of AEs is studied. Then “large area emitters” are proposed as an alternate approach to overcome the power limitations. In this antenna-free new scheme of photomixing, the THz radiation originates directly from the acceleration of photo-induced charge carriers generated within a large semiconductor area. The quasi-continuous distribution of emitting elements corresponds to a high-density array and results in particularly favorable radiation profiles.

Keywords

antenna arrays; antenna radiation patterns; submillimetre wave antennas; AE arrays; CW THz generation; THz radiation; antenna radiation profiles; continuous-wave THz emission; emitting elements; high-density array; large area emitter; large semiconductor area; photoinduced charge carrier acceleration; photomixers; quasicontinuous distribution; Antenna arrays; Indexes; Mixers; Optical propagation; Substrates; High power terahertz; photomixers; planar antennas; terahertz; terahertz arrays;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (EuCAP), 2013 7th European Conference on

Conference_Location

Gothenburg

Print_ISBN

978-1-4673-2187-7

Electronic_ISBN

978-88-907018-1-8

Type

conf

Filename

6546323