Method for characterizing the overdrive-matrix of a liquid crystal wavefront corrector

Yachao, 张亚超 Zhang; Lifa, 胡立发 Hu; Zeng-hui, 彭增辉 Peng; Li, 宣丽 Xuan

doi:10.3788/yjyxs20142905.0709

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“…The AO system is now considered to be an essential setup of many new large aperture optical telescopes. [3,4] In traditional adaptive optics, the distortion is measured by a wavefront sensor (WFS) and corrected by a wavefront corrector (WFC), such as a deformable mirror (DM) [5] or liquid crystal wavefront corrector (LCWC), [6][7][8][9][10][11][12][13] conjugated to the telescope pupil. [14,15] Unfortunately, this approach only achieves a good imaging resolution within a limited field of view (FOV) smaller than the isoplanatic angle that is generally only a few arc-seconds at visible wavelengths.…”

Section: Introductionmentioning

confidence: 99%

Configuration optimization of laser guide stars and wavefront correctors for multi-conjugation adaptive optics

et al. 2016

Chinese Phys. B

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Multi-conjugation adaptive optics (MCAOs) have been investigated and used in the large aperture optical telescopes for high-resolution imaging with large field of view (FOV). The atmospheric tomographic phase reconstruction and projection of three-dimensional turbulence volume onto wavefront correctors, such as deformable mirrors (DMs) or liquid crystal wavefront correctors (LCWCs), is a very important step in the data processing of an MCAO's controller. In this paper, a method according to the wavefront reconstruction performance of MCAO is presented to evaluate the optimized configuration of multi laser guide stars (LGSs) and the reasonable conjugation heights of LCWCs. Analytical formulations are derived for the different configurations and are used to generate optimized parameters for MCAO. Several examples are given to demonstrate our LGSs configuration optimization method. Compared with traditional methods, our method has minimum wavefront tomographic error, which will be helpful to get higher imaging resolution at large FOV in MCAO.

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Section: Introductionmentioning

confidence: 99%

Configuration optimization of laser guide stars and wavefront correctors for multi-conjugation adaptive optics

et al. 2016

Chinese Phys. B

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Method for characterizing the overdrive-matrix of a liquid crystal wavefront corrector

Cited by 1 publication

References 0 publications

Configuration optimization of laser guide stars and wavefront correctors for multi-conjugation adaptive optics

Configuration optimization of laser guide stars and wavefront correctors for multi-conjugation adaptive optics

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