量子电子学报 ›› 2020, Vol. 37 ›› Issue (6): 641-649.

• 基础光学 • 上一篇    下一篇

靶丸壳层折射率的白光干涉测量技术研究


樊婷1,2, 马小军2, 王宗伟2, 王琦2, 何智兵2, 易勇1   


  1. 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
  • 收稿日期:2020-04-13 修回日期:2020-07-12 出版日期:2020-11-28 发布日期:2020-11-28
  • 通讯作者: E-mail: maxj802@163.com E-mail:maxj802@163.com
  • 作者简介:樊婷( 1996 - ), 女, 四川南充人, 研究生, 主要从事精密光学检测方面的研究。E-mail: fanlixil@163.com
  • 基金资助:
    Supported by Science Challenges Project (科学挑战专题资助, TZ2018006-0204-01), Project of State Key Laboratory of Environment- Friendly Energy Materials, Southwest University of Science and Technology (环境友好能源材料国家重点实验室自主课题资助, 18fksy0203, 19fksy08), Open Research Fund Program of Science and Technology on Aerospace Chemical Power Laboratory (航天化学动力技术重点实验室开放基金资助项目, STACPL12018B05-1)

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

FAN Ting 1,2, MA Xiaojun 2, WANG Zongwei 2, WANG Qi 2, HE Zhibing 2, YI Yong   

  1. 1 School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China; 2 Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
  • Received:2020-04-13 Revised:2020-07-12 Published:2020-11-28 Online:2020-11-28

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%。

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

Abstract: 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%.

Key words: thin film optics, refractive index, white light vertical scanning interference, white light reflectance spectra, capsule

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