Performance analysis of a Shack-Hartman wavefront sensor with variable subaperture pixels

Ang Zhang; Changhui Rao; Yudong Zhang; Wenhan Jiang

doi:10.1117/12.549403

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25 October 2004 Performance analysis of a Shack-Hartman wavefront sensor with variable subaperture pixels

Ang Zhang, Changhui Rao, Yudong Zhang, Wenhan Jiang

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Proceedings Volume 5490, Advancements in Adaptive Optics; (2004) https://doi.org/10.1117/12.549403
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

The major error source of Shack-Hartmann wavefront sensor consists of the photon noise, the readout noise, and the sampling error. In this paper, the measurement error of Shack-Hartmann wavefront sensor with variable subaperture pixels is analyzed under the consideration of various threshold values and detecting dynamic ranges. A generalized expression, which is used for fitting the sampling error of Shack-Hartmann wavefront sensor with variable subaperture pixels, is presented. The computational results and the experimental results of the measurement error of Shack-Hartmann wavefront sensor with different pixels per subaperture are also given.

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Ang Zhang, Changhui Rao, Yudong Zhang, and Wenhan Jiang "Performance analysis of a Shack-Hartman wavefront sensor with variable subaperture pixels", Proc. SPIE 5490, Advancements in Adaptive Optics, (25 October 2004); https://doi.org/10.1117/12.549403

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