Title :
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
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;
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
