【摘要】 多层共轭自适应光学系统被广泛应用于地基大型天文望远镜,其可以改善大气非等晕的影响,并有效扩大校正视场。基于MAOS软件,在仅考虑大气非等晕影响的情况下,研究了在可见光波段(0.6μm)和红外光波段(2μm)下两种自适应光学系统的对比,多层共轭自适应光学系统相比传统自适应光学系统在可见光波段性能提升显著;以及双层共轭系统中,当第一个变形镜共轭于入瞳处时,第二个变形镜共轭高度变化对系统性能的影响,在可见光波段确定最佳共轭高度对提升性能十分重要,并初步探讨了在单层自适应光学系统中,变形镜致动器个数对系统性能的影响。更多还原

【Abstract】 Multi conjugate adaptive optics(MCAO) has been widely used in the large ground-base astronomy telescope, since it can enlarge the field-of view(FOV) and reduce the effect of atmospheric anisoplanatism. Only considering the anisoplanatism, with the assistance of the multi-thread adaptive optics simulator(MAOS), the difference of a conventional adaptive optics(CAO) and a MCAO system at the wavelength of 0.6 μm and 2 μm was studied respectively, it is quite obviously that in the visible band there is a significant improvement of the MCAO system than the conventional AO system. The influence of the second deformable mirror(DM) conjugate height was also discussed which had a key influence on the performance in the visible band, while the first one conjugated at the entrance pupil, and a preliminary study of the effect of DM order in the single adaptive optics system was provided in the end.更多还原