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Tri-arm multipinhole interferometer for wavefront measurement and diffractive imaging

机译:三臂式多针孔干涉仪,用于波前测量和衍射成像

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摘要

We propose a tri-arm (or Y-shaped) multipinhole (MP) interferometer for wavefront measurement based on a specially designed tri-arm MP plate. We demonstrate that the complex amplitude of a wavefront sampled by the tri-arm MP plate inserted between the object and the detector plane can be extracted directly from the Fourier transform of a far-field diffraction intensity pattern without the need for any iterative algorithm. A form of coherent diffractive imaging based on a rotatable tri-arm MP plate is also demonstrated, which provides a feasible approach for lensless diffractive imaging in real time.
机译:我们提出了一种基于特殊设计的三臂MP板的三臂(或Y形)多针孔(MP)干涉仪,用于波前测量。我们证明,可以直接从远场衍射强度模式的傅里叶变换中提取由插入在物体和检测器平面之间的三臂MP板采样的波前的复振幅,而无需任何迭代算法。还展示了一种基于可旋转三臂MP板的相干衍射成像形式,为实时无透镜衍射成像提供了一种可行的方法。

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