基于旋光效应的脉冲磁场溯源装置  

Pulsed Magnetic Field Traceability Device Based on Spin Effect

作　　者：上官业欣 何登 周鹰 SHANGGUAN Yexin;HE Deng;ZHOU Ying(No.710 R&D Institute,CSSC,Yichang 443003,China)

机构地区：[1]中国船舶集团有限公司第七一〇研究所,宜昌443003

出　　处：《宇航计测技术》2025年第1期37-41,共5页Journal of Astronautic Metrology and Measurement

摘　　要：针对国内缺乏对脉冲磁场进行定值与量值溯源手段的问题,研制了一种基于法拉第磁致旋光效应的高准确度脉冲磁场测量装置。以某脉冲磁场发生装置为例,通过考察脉冲磁场发生装置的磁场强度与受影响偏振光的偏转角度之间的线性程度,来验证利用磁致旋光效应对强脉冲磁场进行溯源的可行性,结果表明脉冲磁场强度和光强变化幅值之间正弦拟合关系显著。利用偏振光光强作为中间介质将脉冲磁场和标准恒定磁场联系起来,提出了光程比与光强比两种方法,解决了针对强脉冲磁场进行计量考核的标准装置的溯源问题。Aiming at the lack of domestic means of fixing and traceability of pulsed magnetic field,develops a highaccuracy pulsed magnetic field measurement device based on Faraday magnetotelluric effect.Taking a pulsed magnetic field generator as an example,the feasibility of using the magnetotelluric effect for the traceability of strong pulsed magnetic field is verified by examining the linearity between the magnetic field strength of the pulsed magnetic field generator and the deflection angle of the affected polarized light,and the results show that there is a significant sinusoidal fitting relationship between the pulsed magnetic field strength and the amplitude of the change of light intensity.The polarized light intensity is used as an intermediate medium to link the pulsed magnetic field and the standard constant magnetic field,and two methods of optical range ratio and optical intensity ratio are proposed to solve the traceability problem of the standard device for metrological examination of the strong pulsed magnetic field.

关 键 词：磁致旋光 脉冲磁场 线性度 计量溯源性 

分 类 号：O441.5[理学—电磁学] TB972[理学—物理]