Title :
Non-equilibrium Green´s function calculation for GaN-based terahertz quantum cascade laser structures
Author :
Yasuda, Hiroaki ; Kubis, Tillmann ; Hirakawa, Kazuhiko
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol., Tokyo, Japan
Abstract :
We have investigated GaN-based resonant phonon THz-quantum cascade laser (QCL) structures for possible high-temperature operations by using the non-equilibrium Green´s function method. It is found that the GaN THz-QCL structures do not have a gain sufficient for lasing due to very strong electron-LO phonon interaction.
Keywords :
Green´s function methods; electron-phonon interactions; gallium compounds; infrared sources; quantum cascade lasers; submillimetre wave lasers; wide band gap semiconductors; GaN; THz-QCL; electron-LO phonon interaction; high-temperature operations; nonequilibrium Green function; terahertz quantum cascade laser; Electron optics; Gallium nitride; Green products; Optical scattering; Phonons; Quantum cascade lasers;
Conference_Titel :
Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 2011 36th International Conference on
Conference_Location :
Houston, TX
Print_ISBN :
978-1-4577-0510-6
Electronic_ISBN :
2162-2027
DOI :
10.1109/irmmw-THz.2011.6105199
