提高能量密度的超衍射极限激光光束相位补偿技术
文献类型：期刊论文
| 作者 | 滕树云 ; 刘立人 ; 云茂金 ; 闫爱民 |
| 刊名 | 光学学报
 |
| 出版日期 | 2005 |
| 卷号 | 25期号:4页码:439 |
| 关键词 | 衍射 超衍射极限激光光束 相位补偿技术 光学超分辨 diffraction laser beam beyond the diffraction limits phase compensation technology optical superresolution |
| ISSN号 | 0253-2239 |
| 其他题名 | Phase Compensative Technology for the Beam Beyond the Diffraction Limits with High Power |
| 中文摘要 | 定义了激光光束衍射远场光斑压缩前后的能量比以及能量密度比来衡量超衍射极限激光光束的质量。通过利用反向传递算法设计了合适的补偿相位板，不但对准直放大的单一横模激光光束进行小于光学衍射极限的发散度的压缩，同时又保证光束能量集中于压缩后的远场衍射主瓣中，使压缩后的远场衍射光斑的能量密度增加。给出了相应的实例。这一结论不但解决了光学超分辨中光束压缩与能量损失不可避免这一矛盾，而且为发散度小且能量密度高的超衍射极限激光光束的实验工作以及该类光束的实际应用提供了理论基础。; The ratio of the power and the ratio of the power density are firstly defined to evaluate the quality of the beam beyond the diffraction limits. By use of the inverse transfer algorithm to calculate the phase distribution of an appropriate compensative phase, it is found that the reduction of the divergence of the laser beam beyond the diffraction limits and its power density of the diffraction central spot in the far field after reduction doesn't clearly decrease. This conclusion has more significances for practical applications of Gaussian beam beyond the diffraction limits in laser emitting optics. For the given intensity distribution in the far field with certain reduction ratio and limited energy loss, the reverse structure of phase plate could be calculated according to the inverse algorithms and the phase with continuous spatial distribution is quantified into step-shaped distribution so as to simplify the fabrication of a phase plate. This conclusion not only solves the contradiction of the reduction and the power loss, but also provides the theoretic basis for the experimental study and the practical application of the beam. |
| 分类号 | O431.1 |
| 收录类别 | ei |
| 语种 | 中文 |
| 公开日期 | 2009-09-18 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/1724]  |
| 专题 | 上海光学精密机械研究所_信息光学开放实验室 |
| 推荐引用方式 GB/T 7714 | 滕树云,刘立人,云茂金,等. 提高能量密度的超衍射极限激光光束相位补偿技术[J]. 光学学报,2005,25(4):439, 442. |
| APA | 滕树云,刘立人,云茂金,&闫爱民.(2005).提高能量密度的超衍射极限激光光束相位补偿技术.光学学报,25(4),439. |
| MLA | 滕树云,et al."提高能量密度的超衍射极限激光光束相位补偿技术".光学学报 25.4(2005):439. |
入库方式： OAI收割
来源：上海光学精密机械研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。