中文摘要：

采用傅里叶频谱对数方法进行自动聚焦,建立一套显微数字全息记录光路.提出综合利用自动相位补偿程序和手动调节记录参量的方法,对强噪声干扰的全息图进行数值重建,得到美国空军分辨率测试板准确的相位像,实现横向大于2.38μm、轴向不超过10 nm的成像分辨率.实验结果表明,在强噪声情况下,利用自动相位补偿方法只能得到粗略的记录参量;要获得准确的相位信息,必须手动精调.记录高质量数字全息图是数字全息技术的关键.

英文摘要：

An experimental digital holographic microscopy was built.The focal plane was obtained automatically by Fourier spectrum method.A method combining automatic phase aberration compensation procedure with manual adjustment of the reconstruction parameters was proposed.This method reconstructed the digital hologram under strong noise.The accurate phase-contrast image of the test USAF target has been obtained.The lateral resolution was better than 2.38 μm and the axial resolution was less than 10 nm.The experimen...