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Development of a 170-mm hollow corner cube retroreflector for the future lunar laser ranging |
| Yun He(何芸)1,2,3, Qi Liu(刘祺)1,3, Jing-Jing He(何静静)2, Ming Li(黎明)4, Hui-Zong Duan(段会宗)1,3, Hsien-Chi Yeh(叶贤基)1,3, Jun Luo(罗俊)1 |
1 TianQin Research Center for Gravitational Physics, Sun Yat-sen University, Zhuhai 519000, China;
2 MOE Key Laboratory of Fundamental Physical Quantities Measurement, School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China;
3 School of Physics and Astronomy, Sun Yat-sen University, Zhuhai 519000, China;
4 DFH Satellite Co., Ltd., Beijing 100094, China |
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Abstract Over the past 50 years, lunar laser ranging has made great contributions to the understanding of the Earth-Moon system and the tests of general relativity. However, because of the lunar libration, the Apollo and Lunokhod corner-cube retroreflector (CCR) arrays placed on the Moon currently limit the ranging precision to a few centimeters for a single photon received. Therefore, it is necessary to deploy a new retroreflector with a single and large aperture to improve the ranging precision by at least one order of magnitude. Here we present a hollow retroreflector with a 170-mm aperture fabricated using hydroxide-catalysis bonding technology. The precisions of the two dihedral angles are achieved by the mirror processing with a sub-arc-second precision perpendicularity, and the remaining one is adjusted utilizing an auxiliary optical configuration including two autocollimators. The achieved precisions of the three dihedral angles are 0.10 arc-second, 0.30 arc-second, and 0.24 arc-second, indicating the 68.5% return signal intensity of ideal Apollo 11/14 based on the far field diffraction pattern simulation. We anticipate that this hollow CCR can be applied in the new generation of lunar laser ranging.
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Received: 24 June 2018
Revised: 16 July 2018
Accepted manuscript online:
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PACS:
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07.60.-j
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(Optical instruments and equipment)
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07.07.Df
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(Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)
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04.80.Cc
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(Experimental tests of gravitational theories)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11655001 and 11605065). |
Corresponding Authors:
Qi Liu
E-mail: liuq239@mail.sysu.edu.cn
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Cite this article:
Yun He(何芸), Qi Liu(刘祺), Jing-Jing He(何静静), Ming Li(黎明), Hui-Zong Duan(段会宗), Hsien-Chi Yeh(叶贤基), Jun Luo(罗俊) Development of a 170-mm hollow corner cube retroreflector for the future lunar laser ranging 2018 Chin. Phys. B 27 100701
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