Dynamic measurement for the solution concentration variation using digital holographic interferometry and discussion for the measuring accuracy

Jianlin Zhao, Yanyan Zhang, Hongzhen Jiang, Jianglei Di

科研成果: 书/报告/会议事项章节会议稿件同行评审

2 引用 (Scopus)

摘要

Based on digital holographic interferometry (DHI), a method for dynamically measuring the solution concentration variation is introduced. Firstly, a series of digital holograms containing the information of the solution concentration variation is recorded by CCD. Then, according to the relationship between the phase change of the reconstructed object wave and the solution concentration, the two-dimensional (2D) solution concentration distributions in different time are figured out. Taking the measurement of the solution concentration in crystallization process as a sample, the experimental results turn out that it is feasible to in situ, full-field and dynamically monitor the solution concentration variation with the proposed method. We also discuss how to assure the measurement accuracy in following aspects: (1) implementation of the phase correction to eliminate the influence of the environment for the measurement process; (2) determination of the phase calibration base in the space-domain phase unwrapping process according to the time-domain phase unwrapping result of the arbitrary point in solution; (3) the experimental approaches and analysis for improving the measurement accuracy.

源语言英语
主期刊名International Conference on Optics in Precision Engineering and Nanotechnology, icOPEN 2013
DOI
出版状态已出版 - 2013
活动International Conference on Optics in Precision Engineering and Nanotechnology, icOPEN 2013 - Singapore, 新加坡
期限: 9 4月 201311 4月 2013

出版系列

姓名Proceedings of SPIE - The International Society for Optical Engineering
8769
ISSN(印刷版)0277-786X
ISSN(电子版)1996-756X

会议

会议International Conference on Optics in Precision Engineering and Nanotechnology, icOPEN 2013
国家/地区新加坡
Singapore
时期9/04/1311/04/13

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