Simple and robust digital holography for high-resolution imaging

作     者：王华英 王大勇 赵洁 谢建军 

作者机构：College of Applied Sciences Beijing University of Technology 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2008年第6卷第3期

页      面：165-167页

核心收录：

学科分类：0808[工学-电气工程] 070207[理学-光学] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：the National Natural Science Foundation of China(No.60577029) the Natural Science Foundation of Hebei Province (No.F2008000750) the Funding Project for Academic Human Resources Development in Institutions of Higher Learning Under the Jurisdiction of Beijing Municipality,PHR(IHLB) 

主　　题：Holography Optical resolving power Optical transfer function 

摘      要：Based on the point spread function of holographic system, the lateral resolution of digital holographic imaging system without any pre-magnification is studied. The expression of resolution limitation of holo-graphic imaging system is thus presented. We investigate the possibilities to improve the lateral resolution. The simple experimental setup with an off-axis arrangement is built. By using a U.S. Air Force （USAF） test target as microscopic object, the recorded holograms are reconstructed digitally based on the principle of Fresnel diffraction. The lateral resolution of 2.76 μm without any pre-magnification is demonstrated experimentally, which matches the theoretical prediction well.