Title :
Quantum well intersubband transitions as a source of terahertz radiation
Author :
Harrison, P. ; Kelsall, R.W. ; Kinsler, P. ; Donovan, K.
Author_Institution :
Dept. of Electron. & Electr. Eng., Leeds Univ., UK
Abstract :
It is shown that unipolar quantum well systems have potential as sources of terahertz radiation. It is demonstrated that the electronic interactions within these systems must be manipulated in order to favour radiative emission rather than nonradiative loss. Designs are advanced for tunable emitters and optically excited terahertz lasers
Keywords :
laser transitions; population inversion; quantum well lasers; semiconductor quantum wells; submillimetre wave lasers; electronic interactions; optically excited terahertz lasers; quantum well intersubband transitions; radiative emission; terahertz radiation source; tunable emitters; unipolar quantum well systems; Carrier confinement; Charge carrier processes; Energy states; Frequency; Optical design; Optical scattering; Particle scattering; Phonons; Potential well; Stimulated emission;
Conference_Titel :
Terahertz Electronics Proceedings, 1998. THz Ninety Eight. 1998 IEEE Sixth International Conference on
Conference_Location :
Leeds
Print_ISBN :
0-7803-4903-2
DOI :
10.1109/THZ.1998.731668
