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滤波器带宽对傅里叶剪切干涉法精度的影响

Analysis of Fourier shear interferometry based on LSI
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摘要 研究了基于横向剪切干涉仪的傅里叶剪切干涉方法,对频域中条纹频谱的分布进行了分析,并着重讨论了在不同强度的湍流效应下,几种滤波器带宽(a=5、6、9、11)对波前复原精度的影响,仿真计算结果表明:为了提高傅里叶剪切干涉法的复原精度,滤波器的带宽应该随着湍流效应的逐渐增强而适当地变窄。 The Fourier shear interferometry (FSI) based on the lateral shearing interferometer (LSI) is studied. The frequency distribution of the fringes in the Fourier domain is analysed. Meanwhile, the influence of the filter's bandwidths (a=5, 6, 9, 11) on the reconstructed results is also discussed. The numerical simulation results demonstrate that the bandwidth of filter should be narrowed suitably when the turbulent effect is strengthened for the improvement of the FSI.
出处 《量子电子学报》 CAS CSCD 北大核心 2006年第3期316-319,共4页 Chinese Journal of Quantum Electronics
基金 国家863计划项目资助课题 中国科学院合肥研究院物质计算科学中心资助课题
关键词 大气光学 带宽 傅里叶变换 湍流效应 atmospheric optics bandwidth Fourier transformation turbulent effect
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