Phase retrieval from a high-numerical-aperture intensity distribution by use of an aperture-array filter.
Phase retrieval from a high-numerical-aperture intensity distribution by use of an aperture-array filter.
复制标题
使用孔径阵列滤波器从高数值孔径强度分布中进行相位检索。
DOI：
10.1364/josaa.26.002172
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
N. Nakajima
中科院分区：
文献类型：
--
作者：
N. Nakajima
几乎所有用于相干衍射成像的非干涉相位恢复方法都是基于小数值孔径的测量系统，其中菲涅耳或夫琅和费近似可以有效地表示物体与探测器之间的波传播。在相干衍射成像的典型应用--显微技术中，为了实现高空间分辨率的物体重建，需要用大的数值孔径测量衍射强度。我们在这里提出了一种扩展程序来应用先前的使用孔径阵列滤光片的相位恢复方法[J.Opt。SoC。上午好。A25,742(2008)]到具有大数值孔径的系统，其中球面波的第一瑞利-索末菲积分被用来代替抛物面波的菲涅耳积分。在高数值孔径系统中的计算机模拟实例展示了在高横向分辨率下的对象重建和在对象的深度方向上的信息检索。
Almost all noninterferometric phase-retrieval methods used in coherent diffractive imaging have been based on the measurement system with low numerical aperture, in which Fresnel or Fraunhofer approximation is valid to express the wave propagation between an object and a detector. In microscopy, which is a typical application of coherent diffractive imaging, the measurement of the diffraction intensity with high numerical aperture is required for object reconstruction at high spatial resolution. We here propose an extension procedure to apply the previous phase-retrieval method using an aperture-array filter [J. Opt. Soc. Am. A25, 742 (2008)] to the system with high numerical aperture, in which the first Rayleigh-Sommerfeld integral for spherical waves is utilized instead of the Fresnel integral for parabolic waves. Computer-simulated examples in the high-numerical-aperture system demonstrate object reconstruction at high lateral resolution and retrieval of information in the depth direction of an object.