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Proceedings Paper

Ultrawideband current sensor based on the Faraday effect in semimagnetic semiconductors
Author(s): N. J. Copner; Meirion F. Lewis; David M. Parkes; Keith Trafford; Robert L.S. Devine; C. J. Whitehead; Alan D.R. Phelps
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Paper Abstract

Very fast current transients (10 A, 5 GHz) have been measured using the Faraday rotation in CdMnTe sample. RF magnetic fields with an amplitude of < 10 G have been measured, despite the laser intensity noise (at these bandwidths) and the noisy environments. This paper describes a technique whereby the insertion loss is minimized and the effect of the laser intensity noise reduced, enabling these small RF fields to be measured for the first time.

Paper Details

Date Published: 3 March 1995
PDF: 8 pages
Proc. SPIE 2374, Novel Applications of Lasers and Pulsed Power, (3 March 1995); doi: 10.1117/12.205001
Show Author Affiliations
N. J. Copner, DRA (Malvern) (United Kingdom)
Meirion F. Lewis, DRA (Malvern) (United Kingdom)
David M. Parkes, DRA (Malvern) (United Kingdom)
Keith Trafford, DRA (Malvern) (United Kingdom)
Robert L.S. Devine, Strathclyde Univ. (United Kingdom)
C. J. Whitehead, Strathclyde Univ. (United Kingdom)
Alan D.R. Phelps, Strathclyde Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 2374:
Novel Applications of Lasers and Pulsed Power
Michael W. Prairie; Randy D. Curry, Editor(s)

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