Title :
Terahertz electroluminescence from GaSb/AlSb quantum cascade laser
Author :
Yasuda, H. ; Hosako, I. ; Miyashita, S. ; Patrashin, M.
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol., Tokyo, Japan
fDate :
9/15/2005 12:00:00 AM
Abstract :
A phonon depopulation GaSb/AlSb quantum cascade laser was fabricated for the first time. The low longitudinal-optical phonon energy and small effective electron mass of GaSb enables a low electric field at the lasing threshold and a wide design range. The frequency of oscillation was designed to be 2.6 THz. With an increase of injection current, an abrupt increase of luminescence was observed.
Keywords :
III-V semiconductors; aluminium compounds; electroluminescence; gallium compounds; phonons; quantum cascade lasers; submillimetre wave lasers; 2.6 THz; GaSb-AlSb; III-V semiconductors; effective electron mass; injection current; longitudinal-optical phonon energy; phonon depopulation; phonons; quantum cascade lasers; submillimetre wave lasers; terahertz electroluminescence;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20051994
