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Dynamic magneto-optic detector for analog readout

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1 Author(s)
Lins, S. ; UNIVAC, Defense Systems Division, St. Paul, Minn

The addition of a polarization azimuth vibrator, such as a Faraday cell, to a conventional Kerr apparatus yields a dynamic detector with a high SNR capability. The method described here has been utilized in the past as a null detector to observe Kerr rotation. It can be used equally well for analog readout of the magnetic state of the film element. The improved Kerr apparatus is well-suited to a common-mode noise rejection configuration. The common-mode configuration is usable both as a measuring instrument and as a high-speed analog readout system. Dynamic single- and double-ended Kerr apparatus are discussed and typical photodetector output waveforms are shown.

Published in:

Magnetics, IEEE Transactions on  (Volume:3 ,  Issue: 4 )

Date of Publication:

December 1967

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