Emission of Terahertz Waves from Stacks of Intrinsic Josephson Junctions

Details Emission of Terahertz Waves from Stacks of Intrinsic Josephson Junctions Emission of Terahertz Waves from Stacks of Intrinsic Josephson Junctions

2009-01-27

arxiv.org/abs/0901.4290v1

Physics

Condensed Matter

Superconductivity

5 pages-2008 Applied Superconductivity Conference (INVITED)

Scientific paper

By patterning mesoscopic crystals of Bi2Sr2CaCu2O8 (BSCCO) into electromagnetic resonators the oscillations of a large number of intrinsic Josephson junctions can be synchronized into a macroscopic coherent state accompanied by the emission of strong continuous wave THz-radiation. The temperature dependence of the emission is governed by the interplay of self-heating in the resonator and by re-trapping of intrinsic Josephson junctions which can yield a strongly nonmonotonic temperature dependence of the emission power. Furthermore, proper shaping of the resonators yields THzsources with voltage-tunable emission frequencies.

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