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Proceedings Paper

Ultrafast kinetic inductance samplers
Author(s): C. J. Stevens; D. J. Edwards; T. Hao; G. Bianchi; J. F. Ryan
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Paper Abstract

The kinetic energy of electrons in conductors of all types is generally neglected when computing the intrinsic impedance of structures and devices. Except at very high frequencies this is a good approximation. In superconductors the kinetic energy contributes a strong kinetic inductance contribution to the impedance. We report use of the kinetic inductance to both generate and detect ultrafast voltage transients in superconducting device structures. Superconducting micro-bridge structures are fabricated from Tl 2Ba2CaCu2O10 thin films which are then used to demonstrate ultrafast voltage sampling. A simple model for sampling is explained in terms of hot electron dynamics in the presence of a superconducting energy gap.

Paper Details

Date Published: 12 October 2006
PDF: 8 pages
Proc. SPIE 6373, Terahertz Physics, Devices, and Systems, 63730T (12 October 2006); doi: 10.1117/12.685855
Show Author Affiliations
C. J. Stevens, Oxford Univ. (United Kingdom)
D. J. Edwards, Oxford Univ. (United Kingdom)
T. Hao, Oxford Univ. (United Kingdom)
G. Bianchi, Oxford Univ. (United Kingdom)
J. F. Ryan, Oxford Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 6373:
Terahertz Physics, Devices, and Systems
Mehdi Anwar; Anthony J. DeMaria; Michael S. Shur, Editor(s)

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