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Experiments of two pupil lateral motion tracking algorithms using a Shack–Hartmann sensor

Abstract : Pupil stability is one of the factors which limit the performance and operational stability of adaptive optics (AO) systems. This paper analyses two pupil-tracking methods to measure the lateral pupil shift: the first one utilizes the fluxes in all outer edge sub-apertures of a Shack-Hartmann sensor and the second one utilizes the real-time interaction matrix used in an AO system. Experiments with 9×9 Shack-Hartmann sensor are conducted to verify both pupil-tracking algorithms. The results show that both algorithms are effective, after two correction steps, the residual pupil shift is reduced to less than 5% of a Shack-Hartmann sub-aperture.
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Submitted on : Monday, August 22, 2022 - 8:09:09 AM
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Xiaolin Dai, Stefan Hippler, Eric Gendron. Experiments of two pupil lateral motion tracking algorithms using a Shack–Hartmann sensor. Journal of Modern Optics, Taylor & Francis, 2016, 64 (2), pp.127-137. ⟨10.1080/09500340.2016.1212415⟩. ⟨obspm-02268044⟩

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