靶丸壳层折射率的白光干涉测量技术研究  

Determination of refractive index of capsule by using white light interference techniques

作　　者：樊婷 马小军[2] 王宗伟[2] 王琦[2] 何智兵[2] 易勇[1] FAN Ting;MA Xiaojun;WANG Zongwei;WANG Qi;HE Zhibing;YI Yong(School of Materials Science and Engineering,Southwest University of Science and Technology,Mianyang 621010,China;Research Center of Laser Fusion,China Academy of Engineering Physics,Mianyang 621900,China)

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010 [2]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《量子电子学报》2020年第6期641-649,共9页Chinese Journal of Quantum Electronics

基　　金：科学挑战专题资助,TZ2018006-0204-01;环境友好能源材料国家重点实验室自主课题资助,18fksy0203,19fksy08;航天化学动力技术重点实验室开放基金资助项目,STACPL12018B05-1。

摘　　要：为了精密检测靶丸壳层折射率参数,基于白光垂直扫描干涉和白光反射光谱的基本原理,建立了二者联用的靶丸壳层折射率测量方法。数据处理利用曲线拟合测定极值点波长、并由干涉级次连续性判定干涉级次,解决了白光反射光谱波峰位置难以精确确定和单极值点判读可能存在干涉级次误差等难题。对玻璃靶丸折射率进行了测量、实验验证和不确定度分析,研究结果表明,白光干涉技术能够实现靶丸壳层折射率的精确测量,其测量不确定度约为0.86%。In order to accurately determine the refractive index of capsule,a method for measuring the refractive index of capsules is established based on the combination of white light vertical scanning interference(VSI)and white light reflectance spectra(WLRS).To solve the problems such as the difficulty to accurately determinate the peak positions and the possible interference order error in white reflectance spectra,the data processing method,in which the curve fitting is used to determine the peak positions and the interference order is determined by the continuity of interference order,is applied.The measurement,experimental verification and uncertainty analysis of the refractive index of glass capsule are carried out.It is shown that the refractive index of capsule can be measured accurately by white light interference technique,and the measurement uncertainty is about 0.86%.

关 键 词：薄膜光学 折射率 白光垂直扫描干涉 白光反射光谱 靶丸 

分 类 号：O436.1[机械工程—光学工程]