Title

Angular Dependence Of The Radiation Power Of A Josephson Star-Emitter

Keywords

Josephson junctions; Terahertz radiation

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 ||,ac = 0 on its surface. The combined results agree very well with recent experimental observations. Existing Bi 2Sr 2CaCu 2O 8+δ crystals atop perfect electric conductors could have Josephson STAR-emitter power in excess of 5 mW, acceptable for many device applications. © Springer Science+Business Media, LLC 2010.

Publication Date

7-1-2010

Publication Title

Journal of Superconductivity and Novel Magnetism

Volume

23

Issue

5

Number of Pages

613-616

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1007/s10948-010-0719-7

Socpus ID

77954814308 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/77954814308

This document is currently not available here.

Share

COinS