Marathe Shashidhara, Kim S S, Kim S N, Kim Chan, Kang H C, Nickles P V, Noh D Y
Department of Materials Science and Engineering & Nano-bio Materials and Electronics, Gwangju Institute of Science and Technology, Gwangju, 500-712 Korea.
Opt Express. 2010 Mar 29;18(7):7253-62. doi: 10.1364/OE.18.007253.
We present a reflection based coherent diffraction imaging method which can be used to reconstruct a non periodic surface image from a diffraction amplitude measured in reflection geometry. Using a He-Ne laser, we demonstrated that a surface image can be reconstructed solely from the reflected intensity from a surface without relying on any prior knowledge of the sample object or the object support. The reconstructed phase image of the exit wave is particularly interesting since it can be used to obtain quantitative information of the surface depth profile or the phase change during the reflection process. We believe that this work will broaden the application areas of coherent diffraction imaging techniques using light sources with limited penetration depth.
我们提出了一种基于反射的相干衍射成像方法，该方法可用于从在反射几何结构中测量的衍射幅度重建非周期性表面图像。使用氦氖激光器，我们证明了仅从表面的反射强度就可以重建表面图像，而无需依赖于样品物体或物体支撑的任何先验知识。出射波的重建相位图像特别有趣，因为它可用于获取表面深度轮廓或反射过程中相位变化的定量信息。我们相信这项工作将拓宽使用穿透深度有限的光源的相干衍射成像技术的应用领域。
