Title :
Resonant cavity enhanced quantum ring terahertz photodetector
Author :
Alihosseini, F. ; Ahmadi, V. ; Mir, A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Tarbiat Modares Univ., Tehran, Iran
Abstract :
In this paper, based on effective mass method, we study the absorption characteristics of InAs/GaAs quantum ring photodetector in terahertz range. To enhance the absorption in active region of this photodetector we propose a metallic Fabry-Perot resonant cavity with Au nanoslits as top reflector and Au film as the bottom mirror. It is shown that with this structure at frequency of ~7.1 THz, absorption can be enhanced about 55 times.
Keywords :
Fabry-Perot resonators; cavity resonators; gallium arsenide; indium compounds; photodetectors; terahertz wave detectors; InAs-GaAs; absorption; metallic Fabry-Perot resonant cavity; mirror; quantum ring terahertz photodetector enhancement; resonant cavity; Fabry-Perot cavity; absorption; nanoslits; quantum efficiency; quantum ring;
Conference_Titel :
Millimeter -Wave and Terahertz Technologies (MMWaTT), 2012 Second Conference on
Conference_Location :
Tehran
Print_ISBN :
978-1-4673-4954-3
DOI :
10.1109/MMWaTT.2012.6532153
