发展了一种采用结构光照明提高自干涉数字全息成像系统轴向分辨率的方法,理论分析了结构光照明自干涉数字全息层析成像的原理,采用数值模拟和实验研究了结构光空间频率和样品轴向间距对系统层析成像特性的影响,给出了结构光照明模式下自干涉数字全息成像的结果。研究结果表明:结构光照明的自干涉数字全息系统层析成像能力得到了显著提升。

The self-interference digital holographic imaging system with structured light illumination is developed to improve the axial imaging resolution and its basic principle is demonstrated. The numerical simulation and experiment are conducted to investigate the effects of the spatial frequency of the structured light and the axial distance of the sample on the tomographic imaging performances of the system. The results show that self-interference digital holographic imaging under structured light illumination can considerably improve the tomographic imaging capability.