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arXiv 2010.09786physics.opticseess.IV
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信息传递作为优化相位成像的框架

Information Transfer as a Framework for Optimized Phase Imaging

Stewart Koppell, Mark Kasevich

摘要:

为了有效地成像非吸收样品(相位物体),需要专用的相位对比光学器件。通常,这些光学器件的设计假设样品是弱散射的,这意味着样品的相位与其透射函数之间存在线性关系。在强散射、非线性的情况下,标准光学器件是无效的,并且用于表征它们的传递函数是无信息的。我们使用Fisher信息(FI)来评估各种相位成像方案的效率,并计算信息传递函数(ITF)。我们表明,广义版本的Zernike相位对比度是有效的,给出足够的预知的样品。我们表明,没有预知,随机感知测量产生了显着的可用信息的一部分。最后,我们介绍了一种通用的方法,共路干涉测量,可以优化,以优先考虑特定的样品特征的灵敏度。这些测量中的每一个都可以使用傅立叶透镜和相位掩模来执行。

英文摘要:

In order to efficiently image a non-absorbing sample (a phase object), dedicated phase contrast optics are required. Typically, these optics are designed with the assumption that the sample is weakly scattering, implying a linear relation between a sample's phase and its transmission function. In the strongly scattering, non-linear case, the standard optics are ineffective and the transfer functions used to characterize them are uninformative. We use the Fisher Information (FI) to assess the efficiency of various phase imaging schemes and to calculate an Information Transfer Function (ITF). We show that a generalized version of Zernike phase contrast is efficient given sufficient foreknowledge of the sample. We show that with no foreknowledge, a random sensing measurement yields a significant fraction of the available information. Finally, we introduce a generalized approach to common path interferometry which can be optimized to prioritize sensitivity to particular sample features. Each of these measurements can be performed using Fourier lenses and phase masks.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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