Title :
High performance room temperature quantum cascade lasers based on three-phonon-resonance depopulation
Author :
Wang, Qi Jie ; Pflügl, Christian ; Edamura, Tadataka ; Kan, Hirofumi ; Capasso, Federico
Author_Institution :
Sch. of Eng. & Appl. Sci., Harvard Univ., Cambridge, MA
Abstract :
A quantum cascade laser structure based on three-phonon-resonance depopulation is proposed. Devices, emitting at a wavelength of 8.9 mum, processed into ridge waveguide structures and operated in pulsed mode are demonstrated with output powers of 1 W and threshold current densities of 1.2 kA/cm2 at 300 K.
Keywords :
current density; high-speed optical techniques; optical waveguides; phonon-phonon interactions; quantum cascade lasers; ridge waveguides; power 1 W; pulsed mode; quantum cascade laser structure; ridge waveguide structures; temperature 300 K; three-phonon-resonance depopulation; threshold current densities; wavelength 8.9 mum; Electrons; Indium gallium arsenide; Indium phosphide; Laser transitions; Optical waveguides; Power generation; Quantum cascade lasers; Temperature; Threshold current; Waveguide lasers;
Conference_Titel :
IEEE Lasers and Electro-Optics Society, 2008. LEOS 2008. 21st Annual Meeting of the
Conference_Location :
Acapulco
Print_ISBN :
978-1-4244-1931-9
Electronic_ISBN :
978-1-4244-1932-6
DOI :
10.1109/LEOS.2008.4688838
