我们计算的角度依赖性的功率的受激太赫兹放大辐射（STAR）发射的$dc$电压施加在整个堆栈的本征约瑟夫森结。在相干发射过程中，我们假设一个空间均匀的$ac$约瑟夫森电流密度的堆栈作为一个表面电流密度天线源，和堆栈的空腔功能包含在一个磁性表面电流密度源。超导衬底充当完美的磁导体，其表面上具有$H_{||,ac}=0$。结合的结果与最近的实验观察非常吻合。在完美电导体上的现有Bi $_2$ Sr $_2$ CaCu $_2$ O $_{8+δ}$晶体可以具有超过5mW的约瑟夫森星形发射极功率，这对于许多器件应用是可接受的。
英文摘要：
We calculate the angular dependence of the power of stimulated terahertz amplified radiation (STAR) emitted from a $dc$ voltage applied across a stack of intrinsic Josephson junctions. During coherent emission, we assume a spatially uniform $ac$ Josephson current density in the stack acts as a surface electric current density antenna source, and the cavity features of the stack are contained in a magnetic surface current density source. A superconducting substrate acts as a perfect magnetic conductor with $H_{||,ac}=0$ on its surface. The combined results agree very well with recent experimental observations. Existing Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ crystals atop perfect electric conductors could have Josephson STAR-emitter power in excess of 5 mW, acceptable for many device applications.
Mutually synchronized macroscopic Josephson oscillations demonstrated by polarization analysis of superconducting terahertz emitters
University of Tsukuba（筑波大学）；Kyoto University（京都大学）；ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris（巴黎高等师范学院，PSL大学，法国国家科学研究中心，索邦大学，巴黎大学）
Terahertz imaging system with on-chip superconducting Josephson plasma emitters for nondestructive testing
National Institute of Advanced Industrial Science and Technology (AIST)（产业技术综合研究所）；James Watt School of Engineering, University of Glasgow（格拉斯哥大学詹姆斯·瓦特工程学院）；Faculty of Pure and Applied Sciences, University of Tsukuba（筑波大学理工学群）
Strong polaritonic interaction between flux-flow and phonon resonances in Bi2Sr2CaCu2O8+x intrinsic Josephson junctions: Angular dependence and the alignment procedure
Bi 2Sr 2CaCu 2 O 8 +x单晶代表在金属CuO 2-Ca-CuO 2和离子绝缘SrO-2BiO-SrO层之间形成的原子尺度本征约瑟夫森结的自然堆叠。绝缘层中的电致伸缩效应通过交流约瑟夫森效应导致c轴声子的激发。在这里，我们实验研究之间的相互作用和速度匹配（Eck）的电磁共振的磁通流状态的小台面结构与c轴光学声子。报道了一种非常强的相互作用强相互作用，这种相互作用导致由红外和拉曼激活的横光学声子形成声子-极化激元。在这项工作中的一个特别的重点是对共振的角度依赖性的分析。我们描述了一个准确的样品对准过程，防止入侵的Abrikosov涡流场高达17特斯拉，这是必不可少的，以实现高品质的共振在创纪录的高频率高达13太赫兹。
Evidence for a Dual-Source Mechanism of THz Radiation from Rectangular Mesas of Single Crystalline \bm{$\mathrm{Bi_2Sr_2CaCu_2O_{8+δ}}$} Intrinsic Josephson Junctions
Graduate School of Pure & Applied Sciences, University of Tsukuba（筑波大学理工学群）；Department of Physics, University of Central Florida（中佛罗里达大学物理系）
Time-resolved synchronization analysis of stacked intrinsic Josephson junctions of a cuprate superconductor with frequency-modulated terahertz radiation spectra
Kyoto University（京都大学）；National Institute of Advanced Industrial Science and Technology (AIST)（产业技术综合研究所）
