A novel wavefront sensor (WFS) based on liquid crystal on silicon (LCOS) is demonstrated. The design of the liquid crystal microlens array with LCOS is given in detail. To save the energy of the incident light, an optimized optical design of the WFS is also considered. In addition, closed loop wavefront correction experiments were conducted based on the designed LC WFS with square and hexagonal microlens arrays, respectively. In the experiment, the corrector was a tilt and tip mirror. The results indicated that the Zernike coefficients of the tilt and tip were decreased to less than 0.1λ(633 nm) after correction.
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Hu et al. (2008) studied this question.
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