Angular Dependence of the Radiation Power of a Josephson STAR-emitter
Abbreviated Journal Title
J. Supercond. Nov. Magn
Terahertz radiation; Josephson junctions; EMISSION; JUNCTION; Physics, Applied; Physics, Condensed Matter
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 of Superconductivity and Novel Magnetism
"Angular Dependence of the Radiation Power of a Josephson STAR-emitter" (2010). Faculty Bibliography 2010s. 368.