| 一种在二步相移数字全息中实现准确相移的方法 |
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| 引用本文： | 秦怡,巩琼,杨兴强.一种在二步相移数字全息中实现准确相移的方法[J].光子学报,2011(8):1282-1286. |
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| 作者姓名： | 秦怡 巩琼 杨兴强 |
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| 作者单位： | 南阳师范学院物理与电子工程学院; |
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| 基金项目： | 南阳师范学院青年项目基金(No.QN2011004)资助 |
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| 摘 要： | 相移数字全息中的相移准确性决定了重建结果的质量,本文提出了在二步相移数字全息中.实现准确相移的方法.该方法使用数字电压源开环控制普通的压电陶瓷微位移器,通过连续以微小的间隔来改变施加在压电陶瓷微位移器上的电压,可以获得一系列对应于不同相移角的全息图像,进而可以利用这些全息图像重建出来物光波在全息面上的强度分布.实验中采...
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| 关 键 词： | 全息术 数字全息 准确相移 相关系数 |
A Method for Accurate Phase Shift in Two-step Phase-shifting Digital Holography |
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| QIN Yi,GONG Qiong,YANG Xing-qiang.A Method for Accurate Phase Shift in Two-step Phase-shifting Digital Holography[J].Acta Photonica Sinica,2011(8):1282-1286. |
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| Authors: | QIN Yi GONG Qiong YANG Xing-qiang |
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| Institution: | QIN Yi,GONG Qiong,YANG Xing-qiang(College of Physics and Electronic Engineering,Nanyang Normal University,Nanyang,Henan 473061,China) |
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| Abstract: | The quality of reconstruction in phase-shifting digital holography was determined by the accuracy of phase shift.An approach to obtain accurate phase shift in two-step digital holography was proposed.This approach employed an ordinary open-loop controlled piezoelectric actuator,and a serial of phase shift holograms corrisponding to different phase shift angles would be obtained by means of changing the volgate exerted on the piezoelectric actuator continuously.Then the holograms could be used to reconstruct... |
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| Keywords: | Holography Digital holography Accurate phase shift Correlation coefficient |
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