Cavity mode enhancement of terahertz emission from equilateral triangular microstrip antennas of the high-$T_c$ superconductor Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$

ORAL

Abstract

We study the transverse magnetic (TM) electromagnetic cavity mode wave functions for an ideal equilateral triangular microstrip antenna exhibiting C$_{3v}$ point group symmetry, which restricts the number of TM(n,m) modes to $|m-n|=3p$, where the integer $p >0$ for the modes odd and even about the three mirror planes, but $p=0$ can also exist for the even modes. We calculate the wave functions and the power distribution forms from the uniform Josephson current source and from the excitation of one of these cavity modes, and fit data on an early equilateral triangular Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ mesa, for which the C$_{3v}$ symmetry was apparently broken.

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Authors

  • Constance Doty

    Univ of Central Florida

  • Daniel Cerkoney

    Rutgers University

  • Ashley Gramajo

    University of Central Florida

  • Tyler Campbell

    University of Central Florida

  • Candy Reid

    Lockheed Martin

  • Manuel Morales

    Massachusetts Institute of Technology

  • Kaveh Delfanazari

    University of Cambridge, Electrical Engineering Division, and Cavendish Laboratory, University of Cambridge, UK

  • Takashi Yamamoto

    University of Ulm, Germany

  • M. Tsujimoto

    University of Tsukuba, Japan, University of Tsukuba, Univ. of Tsukuba

  • T. Kashiwagi

    University of Tsukuba, Japan, Univ. of Tsukuba

  • C. Watanabe

    University of Tsukuba, Japan, Univ. of Tsukuba

  • H. Minami

    University of Tsukuba, Japan, Univ. of Tsukuba

  • K. Kadowaki

    University of Tsukuba, Japan, Univ. of Tsukuba

  • Richard Klemm

    Univ of Central Florida