Shack-Hartmann wavefront sensor based on a two-dimensional mixed aperture diffractive lens array
Fan Zhang,
Honghai Shen,
Yang Sun
Abstract:The Shack-Hartmann wavefront sensor (SH-WS) is primarily used to detect the beam wavefront shape, which can be used to detect various perturbations in the atmospheric transmission of high-energy lasers. In this paper, we propose the use of spatial frequency to characterize the shape of the wavefront aberration based on the three-dimensional structure of the Zernike aberration. Based on the characteristics of the frequency distribution of the wavefront, we demonstrate a two-dimensional mixed-aperture diffractiv… Show more
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