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Remote angular displacement sensor based on Faraday effect: experiment and modelling

Park, C. M., Melikhov, Yevgen and Lee, S. J. 2006. Remote angular displacement sensor based on Faraday effect: experiment and modelling. Applied Physics Letters 88 (18) , 181116. 10.1063/1.2201892

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Recently, we have reported a magneto-optic angular displacement (MOAD) sensor where both the incident and reflected laser beams pass through a magneto-optic (MO) film. In this letter, we report a modified MOAD sensor where only a reflected laser beam passes through the MO film. With the modified configuration, the modified MOAD sensor is a truly remote sensor such that the MO film can be located close to the detector and far from the sample. Furthermore, the modified sensor system can measure angular displacements with an improved resolution of 1×10−3 deg, which is ten times better than that previously reported.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: Q Science > QC Physics
Uncontrolled Keywords: Faraday effect; magneto-optical sensors; remote sensing by laser beam; photodetectors; displacement measurement; thin films; light reflection
Publisher: American Institute of Physics
ISSN: 0003-6951
Last Modified: 04 Jun 2017 02:02

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