Terahertz emission from the intrinsic Josephson junctions of high-symmetry thermally-managed Bi2Sr2CaCu2O8+δ microstrip antennas

[摘要] We show for high-symmetry disk, square, or equilateral triangular thin microstrip antennas of any composition respectively obeying C∞v, C4v, and C3vpoint group symmetries, that the transverse magnetic electromagnetic cavity mode wave functions are restricted in form to those that are one-dimensional representations of those point groups. Plots of the common nodal points of the ten lowest-energy non-radiating two-dimensional representations of each of these three symmetries are presented. For comparison with symmetry-broken disk intrinsic Josephson junction microstrip antennas constructed from the highly anisotropic layered superconductor Bi2Sr2CaCu2O8+δ(BSCCO), we present plots of the ten lowest frequency orthonormal wave functions and of their emission power angular distributions. These results are compared with previous results for square and equilateral triangular thin microstrip antennas.

[发布机构] Department of Physics, University of Central Florida, 4111 Libra Drive, Orlando; FL; 32816-2385, United States^1;Institute for Materials Research, Hasselt University, Wetenschapspark 1, Diepenbeek; B-3590, Belgium^2;Department of Physics and Astronomy, Rutgers University, 136 Frehlinghuysen Rd., Piscataway; NJ; 08854, United States^3;Lockheed Martin, 5600 Sand Lake Road, Orlando; FL; 32819, United States^4;Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Ibaraki, Tsukuba; 305-8571, Japan^5;Division of Health Science and Technology, Harvard Medical School, 260 Longwood Ave., Boston; MA; 02115, United States^6;Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge; CB3 0HE, United Kingdom^7

[关键词] Bi2Sr2CaCu2O8;Electromagnetic cavity;Emission power;Intrinsic Josephson junction;Layered superconductor;Point group symmetry;Terahertz emissions;Transverse magnetic