层状高温超导单晶中的约瑟夫森涡旋流太赫兹辐射
Josephson-vortex-flow terahertz emission in layered high-Tc superconducting single crystals.
作者信息
Bae Myung-Ho, Lee Hu-Jong, Choi Jae-Hyun
机构信息
Department of Physics, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea.
出版信息
Phys Rev Lett. 2007 Jan 12;98(2):027002. doi: 10.1103/PhysRevLett.98.027002. Epub 2007 Jan 8.
We report on the successful terahertz emission (0.6-1 THz) that is continuous and tunable in its frequency and power, by driving Josephson vortices in resonance with the collective standing Josephson plasma modes excited in stacked Bi2Sr2CaCu2O8+x intrinsic Josephson junctions. Shapiro-step detection was employed to confirm the terahertz-wave emission. Our results provide a strong feasibility of developing long-sought solid-state terahertz-wave emission devices.
我们报道了通过驱动约瑟夫森涡旋与堆叠的Bi2Sr2CaCu2O8+x本征约瑟夫森结中激发的集体驻波约瑟夫森等离子体模式共振，成功实现了连续且频率和功率可调的太赫兹发射（0.6 - 1太赫兹）。采用夏皮罗台阶检测来确认太赫兹波发射。我们的结果为开发长期寻求的固态太赫兹波发射器件提供了强有力的可行性。
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