Zhang Jianhua, Fan Jiadong, Sun Zhibin, Yao Shengkun, Tong Yajun, Tai Renzhong, Jiang Huaidong
Opt Express. 2018 Nov 12;26(23):30128-30145. doi: 10.1364/OE.26.030128.
In common ptychographic coherent diffractive imaging (PCDI) systems, the probe-generating devices typically exhibit strong scattering, which is not fully used. Here, we report the reasonableness of using the diffraction pattern of the probe-generating device as the frequency-domain information of the scanning probe located in the sample plane, and we propose a method introducing this frequency-domain information into an iterative process to improve the imaging quality of PCDI. The new method was demonstrated using both a visible laser source and a synchrotron radiation X-ray source; the proposed method significantly improved the imaging quality in both demonstrations.
在普通的叠层相干衍射成像（PCDI）系统中，产生探针的装置通常表现出强烈的散射，而这一特性并未得到充分利用。在此，我们报告了将产生探针的装置的衍射图案用作位于样品平面中的扫描探针的频域信息的合理性，并提出了一种将该频域信息引入迭代过程以提高PCDI成像质量的方法。使用可见激光源和同步辐射X射线源对新方法进行了验证；在这两种验证中，所提出的方法均显著提高了成像质量。
