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Proceedings Paper

Magnetic field sensors utilizing diluted magnetic semiconductors
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Paper Abstract

We present two different Ac magnetic field sensing configurations exploiting the Faraday effect in the semiconductor compound Cd0.57Mn0.43Te. The first configuration is a typical polarimetric set-up; the periodic magneto-optic polarization rotation of a linearly polarized input in the transducer crystal is converted into intensity modulation by means of a polarization analyzer. In the second configuration, the Faraday modulation appears in the electronic spectrum of the interference signal at the output of a hybrid Mach-Zehnder interferometer. Both set-ups include noise rejection schemes to improve the signal to noise ratio.

Paper Details

Date Published: 23 February 2000
PDF: 6 pages
Proc. SPIE 4068, SIOEL '99: Sixth Symposium on Optoelectronics, (23 February 2000); doi: 10.1117/12.378733
Show Author Affiliations
Adrian Gh. Podoleanu, Univ. of Kent at Canterbury (United Kingdom)
Radu G. Cucu, Univ. of Kent at Canterbury (United Kingdom)
David A. Jackson, Univ. of Kent at Canterbury (United Kingdom)


Published in SPIE Proceedings Vol. 4068:
SIOEL '99: Sixth Symposium on Optoelectronics
Teodor Necsoiu; Maria Robu; Dan C. Dumitras, Editor(s)

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