X光全息术的记录方式对其分辨率的影响

本文从分析X光全息图的两种具体的记录方式入手,考虑记录介质的点扩散函数和全息图的尺寸在不同的记录方式中,对X光全息图的分辨率的影响,结论是,在完全相干光的条件下,X光无透镜傅里叶变换全息图的最小分辨距离不可能小于记录时用的X光聚束器的焦斑或滤波小孔的半径,而X光同轴全息图不可能获得比记录介质的截止频率更高的分辨率.

Effect of recording methods on resolution in X-ray holography

This paper starts with analysing the two special recording methods of X- ray holography, and considers the effect of the impulse response of recording material and the size of hologram on the resolution of X-ray hologram. The conclusion is that the smallest resolving distance of X-ray lensless Fourier transform hologram can not be smaller than radius of the focus spot of the X-ray condenser or the filter aperture used in recording, and the resolution of X-ray in-line hologram can not be higher than the cutoff frequency of recording material, when X-ray source is coherent.