Title :
Terahertz emission from direct created excitons in quantum wells
Author :
HernÁndez-cabrera, A. ; Ramos, A. ; Cruz, H. ; Aceituno, P.
Author_Institution :
Dept. de Fisica Fundamental y Exp., Univ. de La Laguna, Spain
Abstract :
We have studied the dipole electromagnetic radiation emerging from electrically pumped excitons tunneling between asymmetric double quantum wells, taking into account the two-particle nature of the process. Transition between direct and indirect excitons affects the charge oscillation of direct created excitons and therefore the terahertz emission. The frequency of this process is one order of magnitude higher than the photoexcited exciton emission
Keywords :
eigenvalues and eigenfunctions; electron-hole recombination; excitons; semiconductor quantum wells; tunnelling; asymmetric double quantum wells; charge oscillation; dipole electromagnetic radiation; direct created excitons; electrically pumped excitons; terahertz emission; tunneling; two-particle nature; Electrodes; Electromagnetic radiation; Electrons; Excitons; Optical pumping; Resonance; Solids; Spatial coherence; Tunneling; Wave functions;
Conference_Titel :
Frontiers in Electronics, 1997. WOFE '97. Proceedings., 1997 Advanced Workshop on
Conference_Location :
Puerto de la Cruz
Print_ISBN :
0-7803-4059-0
DOI :
10.1109/WOFE.1997.621158
