Effect of optical aberration on Gaussian speckle in a partially coherent imaging system
Effect of optical aberration on Gaussian speckle in a partially coherent imaging system
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DOI：
10.1364/josaa.26.002577
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发表时间：
2009-12-01
影响因子：
1.9
通讯作者：
Milster, Tom D.
中科院分区：
文献类型：
--
作者：
Kang, Dongyel;Milster, Tom D.
在部分空间相干成像系统中，从理论上研究了光学像差对高斯散斑对比度的影响。分析包括相位扰动随机场从一个粗糙的物体照明的扩展源，在图像平面中产生斑点。结果表明，不同于相干照明，散斑对比度在此部分相干系统依赖于奇函数像差，如彗差。此外，计算表明，散斑对比度减少作为相干因子的函数表现出比无像差情况下更强的像差依赖性。(C)2009年美国光学学会
Optical aberration effects on Gaussian speckle contrast are theoretically examined in an imaging system exhibiting partial spatial coherence. Analysis includes phase-perturbed random fields from a rough object illuminated by an extended source that generate speckle in the image plane. Results indicate that, unlike coherent illumination, speckle contrast in this partially coherent system depends on odd-functional aberrations, such as coma. In addition, calculations show that speckle contrast reduction as a function of coherence factor exhibits a stronger dependence on aberrations than for an aberration-free case. (C) 2009 Optical Society of America