| 偏振相移与相位共轭结合的散射光聚焦技术研究 |
| |
| 引用本文： | 张凯,薛彬,王志洋,吴翰钟.偏振相移与相位共轭结合的散射光聚焦技术研究[J].应用光学,2019,40(1):63-67. |
| |
| 作者姓名： | 张凯 薛彬 王志洋 吴翰钟 |
| |
| 作者单位： | 天津大学 海洋科学与技术学院，天津 300072 |
| |
| 基金项目： | 国家重点研发计划2016YFC1401203国家自然科学基金青年科学基金61505140天津市自然科学基金18JCYBJC17100 |
| |
| 摘 要： | 散射介质对光的随机散射作用是制约其光学聚焦和成像的重要因素,光学相位共轭技术能够通过对散射光场共轭还原实现透过散射介质的光学聚焦和成像,其中散射光场相位的获取是共轭还原的核心。阐述了偏振相移的基本原理,将偏振相移与相位共轭技术相结合,设计了新的基于偏振相移的数字光学相位共轭系统。采用633nm的HeNe激光器作为系统光源,毛玻璃作为散射介质开展散射光聚焦实验研究。实验结果表明:该装置能够成功实现透过散射介质的光学聚焦,其中聚焦点与背景光强的比值可达约400倍。
|
| 关 键 词： | 相位共轭 偏振相移 数字全息 散射光聚焦 |
| 收稿时间： | 2018-09-17 |
Focusing of scattering light by combining polarization phase shifting and digital optical phase conjugation |
| |
| ZHANG Kai,XUE Bin,WANG Zhiyang,WU Hanzhong.Focusing of scattering light by combining polarization phase shifting and digital optical phase conjugation[J].Journal of Applied Optics,2019,40(1):63-67. |
| |
| Authors: | ZHANG Kai XUE Bin WANG Zhiyang WU Hanzhong |
| |
| Affiliation: | School of Marine Science and Technology, Tianjin University, Tianjin 300072, China |
| |
| Abstract: | The random scattering effect of scattering medium on light is an important factor that restricts its optical focusing and imaging. The optical phase conjugation technique can realize optical focusing and imaging through the scattering medium by conjugate reduction of scattered light field, where the acquisition of scattered light field phase is the core of conjugate reduction. We expounded the basic principle of polarization phase shift, combined the polarization phase shift with the phase conjugation technique, and designed a novel digital optical phase conjugation system based on polarization phase shift. A 633 nm HeNe laser was used as the system light source, and frosted glass was used as the scattering medium to conduct scattered light focusing experiments.The experimental results show that the device can successfully achieve optical focusing through the scattering medium, and the ratio of the focal point to the background light intensity can reach about 400 times. |
| |
| Keywords: | phase conjugation polarization phase shifting digital holography focusing of scattering light |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《应用光学》浏览原始摘要信息 |
|
点击此处可从《应用光学》下载全文 |
|
