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
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)
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
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.
中图分类号: (Optical instruments and equipment)