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Optimization of the performances of a self-mixing velocimeter by using a Double Laser Diode Configuration

In this paper, we present a self-mixing double-head laser diode velocimeter. Several analyzes are performed to determine the optimal architecture of the double laser diode in terms of accuracy. We demonstrate that the double-head laser diode is insensitive to angle variation contrary to the single laser diode. The accuracy of the double-head laser diode sensor is verified by simulations and experiments.