Acta Optica Sinica, Volume. 41, Issue 6, 0634001(2021)
Fabrication and Performance Testing of Angel Lobster-Eye X-Ray Micro-Pore Optics
Angel lobster-eye X-ray micro-pore optics (MPO) device, as a novel X-ray focusing device, has unique 4π stereoangle focusing ability and the optimal ratio of effective area to weight, thus being one of the most promising X-ray optical imaging systems. According to the structure characteristics of a lobster eye, a lobster eye optical device was successfully fabricated based on the fabrication technique of micro-channel plate square hole array in this paper. Then, the spherical surface accuracy and focusing characteristics of the device were tested by a Zygo interferometer, a fringe reflection profiler, and X-ray beam equipment. The test results show that the fabricated MPO device has a root-mean-square spherical surface accuracy of 0.72 μm, a peak-to-valley value of 2.27 μm, and a radius of curvature of about 752.3 mm. In addition, at a voltage of 2 kV and a current of 50 μA, the diameters of the full width at half maximum of the focal spots on the horizontal and vertical axes are approximately 0.39 mm and 0.42 mm, and the corresponding angular resolution is 3.65 arcmin and 3.93 arcmin, respectively.
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Ge Jin, Chen Zhang, Longhui Li, Zhen Li, Weimin Yuan, Yan Gu, Jian Wang, Zhen Zhang, Zhao Xu, Bowen Jiang, Yidai Liao, Chao Wu, Yufei Li, Yan Guo, Jianqiang Liu, Zhixing Ling, Donghua Zhao. Fabrication and Performance Testing of Angel Lobster-Eye X-Ray Micro-Pore Optics[J]. Acta Optica Sinica, 2021, 41(6): 0634001
Category: X-Ray Optics
Received: Aug. 19, 2020
Accepted: Nov. 2, 2020
Published Online: Apr. 7, 2021
The Author Email: Zhang Chen (chzhang@nao.cas.cn), Li Longhui (bnullh@163.com)