赵洁,王大勇,王云新,戎路

• 1:北京工业大学理学部物理与光电学院

摘要(Abstract)：

本文以4f光学相干成像系统为基础，研究了倾斜光照明物体的情况下，物体频谱的移动规律以及对最终成像的影响。首先，分析了典型物体的频谱，揭示了物体信息与其频谱分布之间的映射关系。其次，基于该衍射受限的成像系统，研究了在倾斜光照明物体的情况下，频谱整体的移动导致系统通频带的频谱成分发生了改变，从而引起成像结果变化的规律。模拟结果表明在单次倾斜光照明物体时，相干成像的结果比较复杂，一般是无法真正提高成像分辨率的；只有获取不同角度倾斜光照明情况下的像面复振幅分布或其频谱，通过融合形成一个包含更多高频成分的频谱，方能实现提高成像分辨率。本文把傅里叶光学中基本的概念和科研前沿相结合，帮助学生加深理解教学中的知识点，并着重体会知识点是如何运用于科研创新的过程。

关键词(KeyWords)： 傅里叶变换;光学相干成像;傅里叶频谱;移频超分辨成像;倾斜光照明

Abstract:

Keywords:

基金项目(Foundation): 北京工业大学研究性教学示范课程（光学）项目;; 国家自然科学基金（批准号：62075001、61675010）;; 北京市教委科技重点项目（批准号：KZ202010005008）资助

作者(Author): 赵洁,王大勇,王云新,戎路

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