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Measurement of rotation speed based on double-beam self-mixing speckle interference

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Abstract

A rotation speed measurement based on double-beam self-mixing speckle interference is presented. The self-mixing speckle signal is analyzed by a cross-correlation algorithm. The experimental results show that, compared with the Doppler frequency shift method, the proposed method can measure high speed at a low sampling rate.

© 2018 Optical Society of America

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