Influence of central beamstop on ptychographic coherent diffractive imaging
文献类型：期刊论文
| 作者 | Liu Hai-Gang ; Xu Zi-Jian ; Zhang Xiang-Zhi ; Guo Zhi ; Tai Ren-Zhong |
| 刊名 | ACTA PHYSICA SINICA
 |
| 出版日期 | 2013 |
| 卷号 | 62期号:15 |
| ISSN号 | 1000-3290 |
| 英文摘要 | A beamstop is commonly used in coherent diffractive imaging (CDI) experiments to collect more high-angle diffraction signals. But it causes the low-frequency signals missed, which can make CDI reconstruction unstable or even fail. In this work, a systematic simulation investigation of the effects of the missing low-frequency signals on the quality of reconstructed images of ptychographic CDI (PCDI) is performed using the ptychographic iterative engine algorithm. We found that the robustness of PCDI to the beamstop is much higher than that of the plane-wave CDI, and a smaller incident probe or a larger probe overlap ratio (>= 70%) can further decrease the negative influence of missing low-freqency signals on the reconstruction image. The probe scanning position error will be the main degrading factor of PCDI instead of the beamstop in the higher overlap cases, and needs to be corrected in experiments by using high precision motors or adopting the position refinement algorithms. Our results provide quantitative guidelines for the usage of beamstops in ptychographic CDI experiments. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000323650000015 |
| 公开日期 | 2014-06-13 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/13780]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Liu Hai-Gang,Xu Zi-Jian,Zhang Xiang-Zhi,et al. Influence of central beamstop on ptychographic coherent diffractive imaging[J]. ACTA PHYSICA SINICA,2013,62(15). |
| APA | Liu Hai-Gang,Xu Zi-Jian,Zhang Xiang-Zhi,Guo Zhi,&Tai Ren-Zhong.(2013).Influence of central beamstop on ptychographic coherent diffractive imaging.ACTA PHYSICA SINICA,62(15). |
| MLA | Liu Hai-Gang,et al."Influence of central beamstop on ptychographic coherent diffractive imaging".ACTA PHYSICA SINICA 62.15(2013). |
入库方式： OAI收割
来源：上海应用物理研究所
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