Simple and robust digital holography for high-resolution imaging 期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Simple and robust digital holography for high-resolution imaging

作者单位：	College of Applied Sciences Beijing University of Technology，College of Applied Sciences Beijing University of Technology，College of Applied Sciences Beijing University of Technology，College of Applied Sciences Beijing University of Technology Beijing 100022 College of Sciences，Hebei University of Engineering，Handan 056038，Beijing 100022，Beijing 100022，Beijing 100022

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 2.76μm without any pre-magnifieation is demonstrated experimentally,which matches the theoretical prediction well.
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