| 部分相干平顶光束通过大气湍流的传输特性 |
| |
| 引用本文： | 林小娟,陈和,陈思颖,郭磐.部分相干平顶光束通过大气湍流的传输特性[J].北京理工大学学报,2012,32(8):828-832,848. |
| |
| 作者姓名： | 林小娟 陈和 陈思颖 郭磐 |
| |
| 作者单位： | 北京理工大学光电成像技术与系统教育部重点实验室,北京,100081;北京理工大学光电成像技术与系统教育部重点实验室,北京,100081;北京理工大学光电成像技术与系统教育部重点实验室,北京,100081;北京理工大学光电成像技术与系统教育部重点实验室,北京,100081 |
| |
| 基金项目： | 国家教育部光电成像技术重点实验室(北京理工大学)基金资助项目(2009CB72400402,2010OEIOF12) |
| |
| 摘 要： | 基于广义惠更斯菲涅尔理论和矩阵光学方法研究部分相干平顶光束在大气湍流中的传输特性.得到部分相干平顶光束交叉谱密度函数的矩阵解析表达式,通过分析交叉谱密度强度和相干度的变化得到部分相干平顶光对湍流的敏感性与距离传输、阶数的关系,可以看到低阶及远距离传输后的光束敏感性较低,而光束的光源阶数、自身相干特性和传输距离对其相干度的变化影响由于湍流的存在而变小.
|
| 关 键 词： | 平顶光束 传输 大气湍流 交叉谱密度 相干度 |
| 收稿时间： | 2011/4/14 0:00:00 |
Propagation Properties of Partially Coherent Flat-Topped Beams Through Turbulent Atmosphere |
| |
| LIN Xiao-juan,CHEN He,CHEN Si-ying and GUO Pan.Propagation Properties of Partially Coherent Flat-Topped Beams Through Turbulent Atmosphere[J].Journal of Beijing Institute of Technology(Natural Science Edition),2012,32(8):828-832,848. |
| |
| Authors: | LIN Xiao-juan CHEN He CHEN Si-ying and GUO Pan |
| |
| Institution: | Key Laboratory of Photoelectronic Imaging Technology and System, Ministry of Education of China, Beijing Institute of Technology, Beijing 100081, China;Key Laboratory of Photoelectronic Imaging Technology and System, Ministry of Education of China, Beijing Institute of Technology, Beijing 100081, China;Key Laboratory of Photoelectronic Imaging Technology and System, Ministry of Education of China, Beijing Institute of Technology, Beijing 100081, China;Key Laboratory of Photoelectronic Imaging Technology and System, Ministry of Education of China, Beijing Institute of Technology, Beijing 100081, China |
| |
| Abstract: | Propagation of partially coherent flat-topped beams (PCFT) through turbulent atmosphere was studied with the help of generalized Huygens-Fresnel integral and the matrix optics. The analytic expression for the cross-spectral density matrix of partially coherent flat-topped beam was derived. Through analyzing the properties of the cross-spectral density and the degree of coherence of PCFT in turbulent atmosphere, the dependence of sensitivity of PCFT to turbulence on propagating distance and beam order number N was investigated. The results show that a PCFT beam with larger propagating distance and lower beam order is more affected by atmospheric turbulence, while the dependence of PCFT order N, coherence properties itself and propagating distance on the spectral degree of coherence becomes weaker due to the existence of atmospheric turbulence. |
| |
| Keywords: | partially coherent flat-topped beams (PCFT) propagation turbulent atmosphere spectral density degree of coherence |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《北京理工大学学报》浏览原始摘要信息 |
| 点击此处可从《北京理工大学学报》下载免费的PDF全文 |
|
