Changchun Institute of Optics,Fine Mechanics and Physics,CAS
Correction of horizontal turbulence with nematic liquid crystal wavefront corrector | |
其他题名 | 论文其他题名 |
Cao Z. L.; Mu Q. Q.; Hu L. F.; Li D. Y.; Liu Y. G.; Jin L.; Xuan L. | |
2008 | |
发表期刊 | Optics Express |
ISSN | 1094-4087 |
卷号 | 16期号:10页码:7006-7013 |
摘要 | To correct horizontal turbulences, a nematic liquid crystal wavefront corrector (NLC WFC) with a fast response is used. It can linearly modulate 2 pi radian at a wavelength of 633 nm. The closed-loop frequency of the adaptive optics system was originally only 12 Hz. Hence, a control system using the NLC WFC was developed, graphic processing units (GPUs) were used to compute the compensated wavefront, and the driving software for the NLC WFC was optimized. With these improvements, the closed loop frequency increased up to 60 Hz. Finally, the correction of a 500-m horizontal turbulence was performed with this fast adaptive system. After the correction, the averaged peak-to-valley (PV) and root-mean-square (RMS) values of the wavefront were reduced to 0.2 lambda. and 0.06 lambda, respectively. The core of a fiber bundle is also resolved with a field angle of 0.68 ''. As the limit of the angular resolution of the telescope is 0.65 '', the quasi-diffraction limited image is acquired with the closed-loop correction. It is shown that the NLC WFC has the ability to correct weak turbulences. (C) 2008 Optical Society of America. |
收录类别 | SCI ; EI |
语种 | 英语 |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ciomp.ac.cn/handle/181722/26388 |
专题 | 中科院长春光机所知识产出 |
推荐引用方式 GB/T 7714 | Cao Z. L.,Mu Q. Q.,Hu L. F.,et al. Correction of horizontal turbulence with nematic liquid crystal wavefront corrector[J]. Optics Express,2008,16(10):7006-7013. |
APA | Cao Z. L..,Mu Q. Q..,Hu L. F..,Li D. Y..,Liu Y. G..,...&Xuan L..(2008).Correction of horizontal turbulence with nematic liquid crystal wavefront corrector.Optics Express,16(10),7006-7013. |
MLA | Cao Z. L.,et al."Correction of horizontal turbulence with nematic liquid crystal wavefront corrector".Optics Express 16.10(2008):7006-7013. |
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