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Proceedings Paper

Performance analysis of a Shack-Hartman wavefront sensor with variable subaperture pixels
Author(s): Ang Zhang; Changhui Rao; Yudong Zhang; Wenhan Jiang
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Paper 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.

Paper Details

Date Published: 25 October 2004
PDF: 10 pages
Proc. SPIE 5490, Advancements in Adaptive Optics, (25 October 2004); doi: 10.1117/12.549403
Show Author Affiliations
Ang Zhang, Institute of Optics and Electronics, CAS (China)
Changhui Rao, Institute of Optics and Electronics, CAS (China)
Yudong Zhang, Institute of Optics and Electronics, CAS (China)
Wenhan Jiang, Institute of Optics and Electronics, CAS (China)


Published in SPIE Proceedings Vol. 5490:
Advancements in Adaptive Optics
Domenico Bonaccini Calia; Brent L. Ellerbroek; Roberto Ragazzoni, Editor(s)

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