Tunable, superconducting, surface-emitting teraherz source

Superconductor technology: apparatus – material – process – High temperature devices – systems – apparatus – com- ponents,... – Josephson junction – per se or josephson junction with only...

Reexamination Certificate

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C505S193000

Reexamination Certificate

active

07610071

ABSTRACT:
A compact, solid-state THz source based on the driven Josephson vortex lattice in a highly anisotropic superconductor such as Bi2Sr2CaCu2O8that allows cw emission at tunable frequency. A second order metallic Bragg grating is used to achieve impedance matching and to induce surface emission of THz-radiation from a Bi2Sr2CaCu2O8sample. Steering of the emitted THz beam is accomplished by tuning the Josephson vortex spacing around the grating period using a superimposed magnetic control field.

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