Title :
Terahertz sources based on dynamic negative differential conductivity due to hot electron bunching in momentum space
Author :
Andronov, A. ; Nefedov, I. ; Sosnin, A.
Author_Institution :
Inst. of Appl. Phys., Acad. of Sci., Nizhny Novgorod, Russia
Abstract :
One possible approach to terahertz sources for the 0.5-10 THz range is to use the dynamic negative differential conductivity (DNDC) due to electron bunching in momentum space. Such sources could be based on the two different mechanisms: Optical Phonon Transit Time Resonance (OPTTR) in the bulk and Bloch oscillations (BO) under multiminiband transport in superlattices. This report gives a short discussion of DNDC under OPTTR with recent simulation of its possibility in the Terahertz range in GaN and concentrates on our recent results on discussion and simulation of DNDC under multiminiband superlattice transport and feasibility of its utilization in the Terahertz BO
Keywords :
hot carriers; negative resistance; semiconductor superlattices; submillimetre wave generation; 0.5 to 10 THz; Bloch oscillation; GaN; dynamic negative differential conductivity; hot electron bunching; miniband superlattice transport; momentum space; optical phonon transit time resonance; terahertz source; Acoustic scattering; Conductivity; Electric fields; Electron optics; Frequency; Optical scattering; Optical superlattices; Phonons; Quantum cascade lasers; Stimulated emission;
Conference_Titel :
Semiconductor Device Research Symposium, 2001 International
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-7432-0
DOI :
10.1109/ISDRS.2001.984436
