基于迈克耳孙干涉仪的非相干数字全息显微成像

发布时间：2017-12-27 21:35

本文关键词：基于迈克耳孙干涉仪的非相干数字全息显微成像　出处：《中国激光》2017年03期 　论文类型：期刊论文

【摘要】：采用基于迈克耳孙干涉仪的非相干数字全息显微成像系统能够得到物体在非相干光照明下的全息图。对基于迈克耳孙干涉仪的非相干数字全息显微成像系统进行了理论和实验研究。利用标量衍射理论计算了该系统在记录过程中的点扩展函数,获得了系统横向放大率及重建距离的具体表达式。搭建了基于迈克耳孙干涉仪的非相干数字全息显微成像系统的实验光路,利用CCD记录全息图,用广义相移数字全息干涉术去除孪生像与零级像,并用角谱算法得到了清晰的重建像。实现了分辨率板和洋葱表皮细胞等样品的非相干全息显微成像,验证了该系统的可行性。分辨率板的成像实验表明,该系统的横向分辨率可达512lp/mm。微米洁面刷软毛的成像实验表明,该系统具有呈现物体三维结构的特性。
[Abstract]:The non coherent digital holographic microscopy imaging system can obtain coherent light object hologram in non based on Michelson interferometer. The theoretical and experimental study on the coherent digital holographic microscopy imaging system based on Michelson interferometer. By using the scalar diffraction theory, the point spread function of the system in the recording process is calculated, and the specific expression of the system lateral magnification and reconstruction distance is obtained. To build a non coherent digital holographic microscopy imaging system of optical experiments based on Michelson interferometer, using CCD hologram recording with generalized phase shifting interferometry to remove the twin image with zero order image, and get a clear image by angular spectrum algorithm. The non coherent holographic microimaging of the samples of the resolution plate and onion epidermal cells has been realized, and the feasibility of the system is verified. The imaging experiment of the resolution plate shows that the lateral resolution of the system is up to 512lp/mm. Show that the imaging experiment of micron facial brush fur, the system has the characteristics of three-dimensional object structure.
【作者单位】：郑州大学物理工程学院;
【基金】：河南省自然科学基金(142300410225) 河南省高等学校重点科研项目(15A140038)
【分类号】：O438.1
【正文快照】： 全息术[1]最初是利用经物体衍射的电子电磁波与相干的背景波叠加来记录物体的振幅和相位信息,从0309001-1而提高电子显微镜的分辨率。Goodman等[2]于1967年利用计算机再现全息图的思想创立了数字全息技术。数字全息技术是传统光学全息术、计算机技术与光电探测技术相结合的产

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