[IEEE 13th International Conference on Semiconducting and Insulating Materials, 2004. SIMC-XIII-2004. - Beijing, People's Republic of China (Sept. 20-25, 2005)] 13th International Conference on Semiconducting and Insulating Materials, 2004. SIMC-XIII-2004. - Design and simulation of terahertz GaN/Al/sub 0.15/Ga/sub 0.85/N quantum cascade laser