Dual-wavelength slightly off-axis digital holographic microscopy
Dual-wavelength slightly off-axis digital holographic microscopy
复制标题
双波长微离轴数字全息显微镜
DOI：
10.1364/ao.51.000191
复制
发表时间：
2012-01-10
期刊：
影响因子：
1.9
通讯作者：
Ye, Tong
中科院分区：
文献类型：
--
作者：
Min, Junwei;Yao, Baoli;Ye, Tong
我们提出了双波长数字全息显微镜与轻微离轴配置。通过合成两个波长之间的差拍波长，将没有相位模糊的轴向测量范围扩展到微米范围，其中两个波长之间的间隔为157 nm。由于Bayer镶嵌滤波彩色CCD相机的高波长选择性，使得样品的实时测量成为可能。通过对涡流相位板和矩形相位台阶的实验研究，验证了该方法的可行性。(C)2012美国光学学会
We propose dual-wavelength digital holographic microscopy with a slightly off-axis configuration. The axial measurement range without phase ambiguity is extended to the micrometer range by synthesizing a beat wavelength between the two wavelengths with separation of 157 nm. Real-time measurement of the specimen is made possible by virtue of the high wavelength selectivity of the Bayer mosaic filtered color CCD camera. The principle of the method is exposed, and the practicability of the proposed configuration is demonstrated by the experimental results on a vortex phase plate and a rectangular phase step. (C) 2012 Optical Society of America