Magnetic field sensors utilising diluted magnetic semiconductors

Podoleanu, Adrian G.H. and Cucu, Radu G. and Jackson, David A. (2000) Magnetic field sensors utilising diluted magnetic semiconductors. In: 6th Symposium on Optoelectronics (SIOEL'99), Sep 22-24 1999, Bucharest, Romania. (The full text of this publication is not available from this repository)

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Abstract

We present two different AC magnetic field sensing configurations exploiting the Faraday effect in the semiconductor compound Cd0.57Mn0.49Te. The first configuration is a typical polarimetric set-up; the periodic magneto-optic polarisation rotation of a linearly polarised input in the transducer crystal is converted into intensity modulation by means of a polarisation analyser. In the second configuration, the Faraday modulation appears in the electronic spectrum of the interference signal at the output of a hybrid Mach-Zender interferometer. Both set-ups include noise rejection schemes (although different in principle and operation) to improve the signal to noise ratio.

Item Type: Conference or workshop item (Paper)
Additional information: Natl Agcy Sci Technol & Innovat; Romanian Acad; Romanian Minist Natl Def; European Opt Soc; SPIE; European Off Aerosp Res & Dev; Inst Optoelectr; Univ Politehnica Bucharest; Univ Bucharest, Fac Phys; Romanian Phys Soc; SPIE, Romanian Chapter
Uncontrolled keywords: diluted magnetic semiconductor; Faraday sensor; common-mode noise rejection scheme; modulation; low coherence interferometry in transmission and reflection
Subjects: T Technology
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Optics
Faculties > Science Technology and Medical Studies > School of Physical Sciences
Depositing User: A. Xie
Date Deposited: 28 Aug 2009 14:49
Last Modified: 06 May 2014 10:51
Resource URI: http://kar.kent.ac.uk/id/eprint/16506 (The current URI for this page, for reference purposes)
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