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