Remote angular displacement sensor based on Faraday effect: Experiment and modeling | Zendy

C. M. Park | Zendy; Yevgen Melikhov | Zendy; S. J. Lee | Zendy

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Remote angular displacement sensor based on Faraday effect: Experiment and modeling

Author(s) -

C. M. Park,

Yevgen Melikhov,

S. J. Lee

Publication year - 2006

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.2201892

Subject(s) - angular displacement , angular resolution (graph drawing) , optics , displacement (psychology) , detector , laser , faraday cage , physics , faraday effect , interferometry , laser beams , materials science , acoustics , magnetic field , psychology , mathematics , combinatorics , quantum mechanics , psychotherapist

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.

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