Vartiainen Ismo, Mohacsi Istvan, Stachnik Karolina, Guizar-Sicairos Manuel, David Christian, Meents Alke
Opt Lett. 2016 Feb 15;41(4):721-4. doi: 10.1364/OL.41.000721.
We present an imaging technique combining Zernike phase-contrast imaging and ptychography. The contrast formation is explained by following the theory of Zernike phase-contrast imaging. The method is demonstrated with x-rays at a photon energy of 6.2 keV, showing how ptychographic reconstruction of a phase sample leads to a Zernike phase-contrast image appearing in the amplitude reconstruction. In addition, the results presented in this Letter indicate an improvement of the resolution of the reconstructed object in the case of Zernike ptychography compared with the conventional one.
我们提出了一种结合泽尼克相衬成像和叠层成像术的成像技术。通过遵循泽尼克相衬成像理论来解释对比度的形成。该方法在光子能量为6.2keV的X射线下得到了验证，展示了对相位样品进行叠层成像重建如何导致在幅度重建中出现泽尼克相衬图像。此外，本信函中给出的结果表明，与传统方法相比，泽尼克叠层成像术在重建物体分辨率方面有所提高。
