Title :
GaSb/AlSb quantum cascade laser for terahertz signal source
Author :
Yasuda, Hiroaki ; Hosako, Iwao ; Miyashita, Sen ; Patrashin, Mikhail
Author_Institution :
National Inst. of Inf. & Commun. Technol., Tokyo, Japan
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; electric fields; gallium compounds; luminescence; phonons; quantum cascade lasers; submillimetre wave lasers; 2.6 THz; GaSb-AlSb; lasing threshold; longitudinal-optical phonon energy; low electric field; oscillation frequency; phonon depopulation; quantum cascade laser; small effective electron mass; terahertz signal source; Biomedical optical imaging; Electromagnetic wave absorption; Electrons; Frequency; Optical scattering; Optical sensors; Optical superlattices; Phonons; Power generation; Quantum cascade lasers;
Conference_Titel :
Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings
Print_ISBN :
0-7803-9433-X
DOI :
10.1109/APMC.2005.1607048
