Influence of the illumination coherency and illumination aperture on the ptychographic iterative microscopy*
Liu Chenga),b)†, Zhu Jian-Qianga), John Rodenburgb)
       
Reconstructed phase images for electron gun widths of 3.2 Å (a), 3.6 Å (b), and 4.0 Å (c) when the numerical aperture is 30 mrad