用于超构表面衍射光帆光力测量的扭秤设计  

Torsion pendulum design for metasurfacebased diffraction light sail optical force measurement

作　　者：龚攀 杜安斌 张飞[1,2,3] 蒲明博 唐拓疆 李兰婷[5] 罗先刚 Gong Pan;Du Anbin;Zhang Fei;Pu Mingbo;Tang Tuojiang;Li Lanting;Luo Xiangang(National Key Laboratory of Optical Field Manipulation Science and Technology,Chinese Academy of Sciences,Chengdu,Sichuan 610209,China;State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering,Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu,Sichuan 610209,China;Research Center on Vector Optical Fields,Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu,Sichuan 610209,China;College of Materials Sciences and Opto-Electronic Technology,University of Chinese Academy of Sciences,Beijing 100049,China;Tianfu Xinglong Lake Laboratory,Chengdu,Sichuan 610299,China)

机构地区：[1]中国科学院光场调控科学技术全国重点实验室,四川成都610209 [2]中国科学院光电技术研究所微细加工光学技术国家重点实验室,四川成都610209 [3]中国科学院光电技术研究所矢量光场研究中心,四川成都610209 [4]中国科学院大学材料科学与光电技术学院,北京100049 [5]天府兴隆湖实验室,四川成都610209

出　　处：《光电工程》2024年第8期145-153,共9页Opto-Electronic Engineering

基　　金：国家自然科学基金资助项目(12304489)。

摘　　要：基于超构表面技术的衍射光帆在矢量光场的作用下,其最大加速度、自稳定推进力和姿态可控性可以得到提高。在真空环境中,精确测量衍射光帆在矢量光场作用下产生的光力对建立完整的空间动力学模型至关重要。基于扭秤弱力测量技术,本文分别设计了面向形状规则与不规则的衍射光帆的光力测量扭秤。对于形状规则的光帆,可通过严格控制扭秤的尺寸及各部件相对位置误差等方法提高测量精度,该扭秤理论测量误差为0.55‰。形状不规则光帆样品的转动惯量及误差难以精确计算,通过在扭秤上增加可随时取放的标准球,标准球的转动惯量可以通过其几何尺寸及位置严格计算,测量扭秤在有无标准球的状态下的周期即可以给出其受到的光力大小。本研究提升了光力测量实验的效率和灵活性,为光帆推进、空间碎片轨道操控等应用提供数据支撑。When a vector optical field acts on the metasurface-based diffractive light sail,the maximum acceleration,self-stabilizing thrust,and attitude controllability of the diffractive light sail can be enhanced.In a vacuum environment,it is important to measure the optical force acting on the diffraction light sail to establish a comprehensive space dynamics model under the influence of vector optical fields.Based on the weak force measurement technique,we have designed an optical force measurement torsion pendulum for both regular and irregular shaped diffraction light sails.The measurement accuracy of regular-shaped light sails can be enhanced by ensuring that the size of the torsion pendulum and relative position errors of each component are strictly controlled.The force measurement has a relative error of 0.55‰.We have also designed a torsion pendulum to measure the optical force of the irregular-shaped light sails,which can hardly calculate the moment of inertia.There are two standard spheres on the torsion pendulum that can be placed or removed at any time.The magnitude of the optical force acting on the complex object can be measured by calculating the moment of inertia of the spheres.This research enhances the efficiency and flexibility of optical force measurement experiments,providing data support for applications such as laser-driven light sail and space debris remediation.

关 键 词：光压力 衍射光帆 弱力测量 扭秤 超构表面 

分 类 号：O439[机械工程—光学工程]