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High-resolution incoherent-to-coherent conversion by use of the photorefractive fanning effect

机译:利用光折变扇形效应实现高分辨率的非相干到相干转换

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We demonstrate that high-resolution incoherent-to-coherent conversion can be carried out in an incoherent-to-coherent converter based on the photorefractive fanning effect. The output coherent image has the same direction as the incident coherent beam, and thus the resolution is not limited by the grating diffraction. We obtained a resolution as high as 90.5 line pairs/mm in this experiment. The transmittance of the coherent beam relative to the intensity of the incoherent beam was measured. We also theoretically estimated the resolving power with respect to the interaction length. The numerical results agree well with the experiments.
机译:我们证明,基于光折射扇形效应,可以在非相干至相干转换器中进行高分辨率的非相干至相干转换。输出的相干图像具有与入射相干光束相同的方向,因此分辨率不受光栅衍射的限制。在此实验中,我们获得了高达90.5线对/ mm的分辨率。测量相干光束的透射率相对于非相干光束的强度。我们还从理论上估计了相互作用长度的分辨能力。数值结果与实验吻合良好。

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