Acta Optica Sinica, Volume. 37, Issue 4, 411001(2017)
Study on Fourier-Transform Ghost Imaging with Partially Coherent X-Ray
In the ghost imaging, a pseudo-thermal light source is generated by illuminating a diffuser with coherent light. However, in the X-ray region, the incident light of a pseudo-thermal light source is partially coherent, and the spatially partial coherence of the light has a great influence on the imaging quality. The influence of the X-ray partial coherence on the second order correlation function of pseudo-thermal light source is analyzed theoretically using the Gaussian Schell model. The simulation results based on the statistical optics are also given. Both the theoretical and simulated results show that the visibility and resolution of the ghost imaging are influenced by the X-ray spatial coherence. In the case of limited spatial coherence, the visibility of X-ray Fourier-transform ghost imaging can be improved by using a pinhole in front of the diffuser, and the width of the pinhole should be equal to the transverse coherent length of the X-ray. It will be beneficial to achieve the wide applications of X-ray Fourier-transform ghost imaging.
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Tan Zhijie, Yu Hong, Lu Ronghua, Zhao Xin, Han Shensheng. Study on Fourier-Transform Ghost Imaging with Partially Coherent X-Ray[J]. Acta Optica Sinica, 2017, 37(4): 411001
Category: Imaging Systems
Received: Nov. 8, 2016
Accepted: --
Published Online: Apr. 10, 2017
The Author Email: Zhijie Tan (tanzj@siom.ac.cn)