Operation $GaAs/Al_{0.45}Ga_{0.55}As}$ quantum cascade laser with emission wavelength at ${\lambda}{\approx}8.6{\mu}m$

Jeong, Jin-Wook (Nano Device Research Center, Korea Institute of Science and Technology, Display and Nanosystem Laboratory, College of Engineering, Korea University) ;
Ju, Byeong-Kwon (Nano Device Research Center, Korea Institute of Science and Technology, Display and Nanosystem Laboratory, College of Engineering, Korea University) ;
Song, Jin-Dong (Nano Device Research Center, Korea Institute of Science and Technology) ;
Borse, Swati Anil (Nano Device Research Center, Korea Institute of Science and Technology) ;
Lee, Hye-Jin (Nano Device Research Center, Korea Institute of Science and Technology) ;
Colombelli, Raffaele (Institut d'Electronique Fondamentale) ;
Kim, Sang-In (College of Information Technology, Ajou University) ;
Lee, Jung-Il (Nano Device Research Center, Korea Institute of Science and Technology) ;
Han, Il-Ki (Nano Device Research Center, Korea Institute of Science and Technology)