Title

Angular Dependence of the Radiation Power of a Josephson STAR-emitter

Authors

Authors

R. A. Klemm;K. Kadowaki

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

J. Supercond. Nov. Magn

Keywords

Terahertz radiation; Josephson junctions; EMISSION; JUNCTION; Physics, Applied; Physics, Condensed Matter

Abstract

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 that 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(parallel to,ac) = 0 on its surface. The combined results agree very well with recent experimental observations. Existing Bi(2)Sr(2)CaCu(2)O(8+delta) crystals atop perfect electric conductors could have Josephson STAR-emitter power in excess of 5 mW, acceptable for many device applications.

Journal Title

Journal of Superconductivity and Novel Magnetism

Volume

23

Issue/Number

5

Publication Date

1-1-2010

Document Type

Article

Language

English

First Page

613

Last Page

616

WOS Identifier

WOS:000278546800011

ISSN

1557-1939

Share

COinS