中国物理B ›› 2018, Vol. 27 ›› Issue (10): 100701-100701.doi: 10.1088/1674-1056/27/10/100701

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Development of a 170-mm hollow corner cube retroreflector for the future lunar laser ranging

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)   

  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
  • 收稿日期:2018-06-24 修回日期:2018-07-16 出版日期:2018-10-05 发布日期:2018-10-05
  • 通讯作者: Qi Liu E-mail:liuq239@mail.sysu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11655001 and 11605065).

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. 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
  • Received:2018-06-24 Revised:2018-07-16 Online:2018-10-05 Published:2018-10-05
  • Contact: Qi Liu E-mail:liuq239@mail.sysu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11655001 and 11605065).

摘要:

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.

关键词: lunar laser ranging, corner cube retroreflector, diffraction, alignment

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.

Key words: lunar laser ranging, corner cube retroreflector, diffraction, alignment

中图分类号:  (Optical instruments and equipment)

  • 07.60.-j
07.07.Df (Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing) 04.80.Cc (Experimental tests of gravitational theories)