渐变折射率棒透镜折射率分布的无损测量

Nondestructive measurement of refractive index profile of gradient refractive index rod lens.

作者信息

Lv Hao, Liu Aimei, Tong Jufang, Yi Xunong, Li Qianguang, Wang Xinmin, Ding Yaoming

机构信息

Department of Physics, Xiaogan University, Xiaogan 432000, People's Republic of China.

出版信息

Rev Sci Instrum. 2010 Oct;81(10):103104. doi: 10.1063/1.3492154.

DOI:10.1063/1.3492154

PMID:21034072

Abstract

In this paper, a simple nondestructive method is described to obtain the refractive index profile of a gradient refractive index rod lens by means of optical coherence tomography. The approach exploits the fact that optical coherence tomography provides a direct measurement of the optical path of the light traveled through a gradient refractive index rod lens. The refractive index profile for a gradient refractive index rod lens is retrieved by iterative fitting of the optical path calculated by the ray tracing method with that experimentally measured using optical coherence tomography. The measured refractive index profile is in good agreement with theory.

摘要

本文描述了一种简单的无损方法，通过光学相干断层扫描来获取梯度折射率棒透镜的折射率分布。该方法利用了光学相干断层扫描能够直接测量光在梯度折射率棒透镜中传播的光程这一事实。通过将光线追迹法计算的光程与利用光学相干断层扫描实验测量的光程进行迭代拟合，来获取梯度折射率棒透镜的折射率分布。测量得到的折射率分布与理论结果吻合良好。