Abstract：We demonstrate continuous-wave (cw) operation of terahertz (THz) quantum cascade lasers emitting at 3.2 THz based on bound-to-continuum active region and semi-insulating surface-plasmon waveguide design. Optical power of 62 mW with a threshold current density of 285 A/cm2 is obtained at 10 K from a 130-μm-wide and 1.5-mm-long laser in cw operation. Maximum cw operation temperature is up to 60 K. In pulsed mode, peak optical power more than 100 mW at 10 K and 2.1 mW at 85 K are observed from a 230-μm-wide and 2-mm-long device.
. [J]. 中国物理快报, 2013, 30(6): 64201-064201.
WANG Tao, LIU Jun-Qi, CHEN Jian-Yan, LIU Ying-Hui, LIU Feng-Qi, WANG Li-Jun, WANG Zhan-Guo . Continuous-Wave Operation of Terahertz Quantum Cascade Lasers at 3.2 THz. Chin. Phys. Lett., 2013, 30(6): 64201-064201.
2013, Vol. 30 
