Title :
High temperature performance of a diagonal THz-QCL calculated with non-equilibrium Green's function method
Author :
Yasuda, H. ; Kubis, T. ; Vogl, P. ; Hosako, I. ; Hirakawa, K.
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol., Tokyo, Japan
Abstract :
We have calculated the performance of a novel diagonal design-based THz-QCLs with the non-equilibrium Green´s function method. The diagonal QCL has a THz gain even at 200 K. The main origin for this is that the non-radiative losses are better suppressed than the optical transition.
Keywords :
Green´s function methods; high-temperature techniques; microwave measurement; microwave photonics; nonradiative transitions; optical losses; quantum cascade lasers; terahertz wave devices; THz gain; diagonal THz-QCL; high-temperature performance; nonequilibrium Green´s function method; nonradiative losses; optical design; optical transition; temperature 200 K; terahertz quantum cascade lasers; Absorption; Current density; Green´s function methods; Optical scattering; Phonons; Quantum cascade lasers;
Conference_Titel :
Infrared Millimeter and Terahertz Waves (IRMMW-THz), 2010 35th International Conference on
Conference_Location :
Rome
Print_ISBN :
978-1-4244-6655-9
DOI :
10.1109/ICIMW.2010.5612625
