摘要
文章设计了一种利用数字模拟预测干板透射式全息成像质量的实验方法。通过布置双凸透镜采集了干板实验的衍射再生像和数字模拟实验的物光信息,以曝光时间作为实验自变量,结合快速傅里叶变换(FFT)与博奇编码的算法,利用分段拟合、线性插值的方法进行数据分析。发现了两种成像模式下“清晰度曝光时间”曲线的良好相关性,相关系数接近或超过0.999,可实现干板全息成像质量的反演预测.进而提出一款查询软件,为实验教学和生产实践提供借鉴。
A kind of experimental method to predict the quality of plate recording transmission holographic imaging using digital simulation is designed.By arranging double convex lenses,the object-light information of the diffraction regeneration image and digital simulation experiment of flat plate experiment is collected.The exposure time is taken as the experimental independent variable,and the data are analyzed by piecewise fitting and linear interpolation combined with fast Fourier transform(FFT)and Burch coding algorithm.A good correlation between the“sharpness-exposure time”curves of two imaging modes is found,and the correlation coefficients are near or above 0.999.The inversion prediction of plate holographic imaging quality can be realized.Then a query software is proposed to provide references for experimental teaching and production practice.
作者
王卓
张泽华
王菁
WANG Zhuo;ZHANG Zehua;WANG Jing(School of Aeronautics Science and Engineering,Beijing 100191;School of Physics, Beihang University, Beijing 100191)
出处
《物理与工程》
2019年第6期58-64,70,共8页
Physics and Engineering
关键词
干板透射式全息
计算全息
曝光时间
清晰度评价
博奇编码
plate recording transmission holography
computer-generated holography
exposure time
sharpness evaluation
Burch coding
