| 结合计算层析与光学相干层析测量折射率分布 |
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| 引用本文： | 戴云,张雨东,史国华. 结合计算层析与光学相干层析测量折射率分布[J]. 光学学报, 2006, 26(11): 666-1670 |
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| 作者姓名： | 戴云 张雨东 史国华 |
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| 作者单位： | 中国科学院光电技术研究所,成都,610209;中国科学院光电技术研究所,成都,610209;中国科学院研究生院,北京,100039 |
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| 基金项目： | 中国科学院光电研究院知识创新工程宏观调控经费(A05K007)资助课题。 |
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| 摘 要： | 通过将计算层析技术与光学相干层析技术相结合,测量散射介质非均匀折射率分布。该方法测量散射样品折射率分布时,通过光学相干层析技术测量散射样品折射率分布在多个方向上的投影,采用计算层析技术实现对样品折射率分布的层析重建,克服了传统折射率光学测量方法如单纯的基于光学相干层析原理的焦点追迹法和光程匹配法,不能测量散射介质非均匀折射率分布的缺点。采用该方法在实验中对梯度折射率棒的径向相对折射率分布进行层析重建,取得了较好的实验结果。
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| 关 键 词： | 光学测量 光学相干层析 计算层析 折射率 |
| 文章编号： | 0253-2239（2006）11-1666-5 |
| 收稿时间： | 2005-11-22 |
| 修稿时间： | 2006-02-28 |
Refractive Index Distribution Measurement Combining Computed Tomography with Optical Coherence Tomography |
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| Dai Yun,Zhang Yudong,Shi Guohua. Refractive Index Distribution Measurement Combining Computed Tomography with Optical Coherence Tomography[J]. Acta Optica Sinica, 2006, 26(11): 666-1670 |
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| Authors: | Dai Yun Zhang Yudong Shi Guohua |
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| Affiliation: | 1 Institute of Optics and Electronics, the Chinese Academy of Sciences, Chengdu 610209; 2 Graduate School of the Chinese Academy of Sciences, Beijing 100039 |
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| Abstract: | The inhomogeneous refractive index distribution of scattering medium is measured by combining computed tomography(CT) with optical coherence tomography(OCT).The refractive index distribution is reconstructed by CT technique and the needed projections in different directions are obtained by OCT system.This method gets advantages over traditional optical refractive index measurement method,focus tracking method simply based on OCT and optical path matching method which(cannot) measure inhomogeneous refractive index distribution of scattering medium.The refractive index distribution of a gradient refractive index bar is measured and a favorable result is obtained. |
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| Keywords: | optical measurement optical coherence tomography computed tomography refractive index |
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