Enhanced operating temperature in terahertz quantum cascade lasers based on direct phonon depopulation
Room temperature operation of terahertz quantum cascade lasers (THz QCLs) has been a long-pursued goal to realize compact semiconductor THz sources. Here, in this paper, we report on improving the maximum operating temperature of THz QCLs to ~ 261 K as a step toward the realization of this goal.
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSIC↗