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Immersion Birefringent Transducer for Angular Displacement Measurement in Heterodyne Interferometer

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In this paper, a novel immersion type birefringent transducer is proposed for optically measuring angular displacement based on a heterodyne interferometry. As a result, a resolution of 2.85×10−5 deg with a dynamic range of over 5deg has been achieved by utilizing a KTP plate immersed in a glycerin solution.

© 2013 Optical Society of America

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