Abstract
An auto-focusing method for digital holographic microscopy has been proposed by employing two off-axis illumination beams. When specimens are illuminated by two plane waves in different directions, it is found that the farther the reconstruction plane is from the image plane, the wider the two reconstructed images are separated from each other. Thus, the image plane can be determinated by finding the minimum of the variation between the two reconstructed object waves on both the amplitude and phase distributions. The feasibility of the proposed method is demonstrated by the corresponding simulation and experiment.
© 2012 Optical Society of America
Full Article | PDF ArticleMore Like This
Peng Gao, Baoli Yao, Romano Rupp, Junwei Min, Rongli Guo, Baiheng Ma, Juanjuan Zheng, Ming Lei, Shaohui Yan, Dan Dan, and Tong Ye
Opt. Lett. 37(7) 1172-1174 (2012)
Rongli Guo, Baoli Yao, Peng Gao, Junwei Min, Meiling Zhou, Jun Han, Xun Yu, Xianghua Yu, Ming Lei, Shaohui Yan, Yanlong Yang, Dan Dan, and Tong Ye
Appl. Opt. 52(34) 8233-8238 (2013)
Junwei Min, Baoli Yao, Peng Gao, Rongli Guo, Baiheng Ma, Juanjuan Zheng, Ming Lei, Shaohui Yan, Dan Dan, Tao Duan, Yanlong Yang, and Tong Ye
Appl. Opt. 51(2) 191-196 (2012)