摘要
The terahertz quantum-cascade laser （THz QCL） based on bound-to-continuum structure is demonstrated. The X-ray diffraction measurement of the material shows a high crystalline quality of the active region. A THz QCL device was fabricated with semi-insulating surface-plasmon waveguide. The test device is lasing at about 3 THz and operating up to 60 K. It shows a single frequency property under different drive currents and temperatures. At 9 K, the maximum output power is greater than 2 mW with a threshold current density of 159 A/cm2.
The terahertz quantum-cascade laser （THz QCL） based on bound-to-continuum structure is demonstrated. The X-ray diffraction measurement of the material shows a high crystalline quality of the active region. A THz QCL device was fabricated with semi-insulating surface-plasmon waveguide. The test device is lasing at about 3 THz and operating up to 60 K. It shows a single frequency property under different drive currents and temperatures. At 9 K, the maximum output power is greater than 2 mW with a threshold current density of 159 A/cm2.
基金
Project supported by the National Basic Research Program of China(Grant No.2014CB339803)
the National High Technology Research and Development Program of China(Grant No.2011AA010205)
the National Natural Science Foundation of China(Grant Nos.61131006 and 61321492)
the Major National Development Project of Scientific Instrument and Equipment(Grant No.2011YQ150021)
the National Science and Technology Major Project(Grant No.2011ZX02707)
the Major Project(Grant No.YYYJ-1123-1)
