[1]张国文,蒲继雄.部分相干电磁光束在湍流大气中传输的交叉偏振度[J].华侨大学学报(自然科学版),2011,32(1):22-29.[doi:10.11830/ISSN.1000-5013.2011.01.0022]
　ZHANG Guo-wen,PU Ji-xiong.Degree of Cross-Polarization of Partially Coherent Electromagnetic Beams Propagating in Turbulent Atmosphere[J].Journal of Huaqiao University(Natural Science),2011,32(1):22-29.[doi:10.11830/ISSN.1000-5013.2011.01.0022]
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部分相干电磁光束在湍流大气中传输的交叉偏振度()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第32卷
期数:
2011年第1期
页码:
22-29
栏目:
出版日期:
2011-01-20

文章信息/Info

Title:
Degree of Cross-Polarization of Partially Coherent Electromagnetic Beams Propagating in Turbulent Atmosphere
文章编号:
1000-5013(2011)01-0022-08
作者:
张国文; 蒲继雄
华侨大学信息科学与工程学院
Author(s):
ZHANG Guo-wen;  PU Ji-xiong
College of Information Science and Engineering, Huaqiao University, Quanzhou 362021, China
关键词:
部分相干;  电磁光束;  高斯-谢尔模型;  湍流大气;  交叉偏振度
Keywords:
partially coherent;  electromagnetic beam;  Gaussian-Schell model;  atmospheric turbulence;  degree of cross-polarization
分类号:
O436.3
DOI:
10.11830/ISSN.1000-5013.2011.01.0022
文献标志码:
A
摘要:
推导部分相干电磁高斯-谢尔模型光束在湍流大气中的交叉谱密度矩阵.根据交叉偏振度的理论,研究部分相干电磁光束在湍流大气中的交叉偏振度的变化情况.研究表明,部分相干电磁光束的交叉偏振度由大气折射率结构常数、光源相关长度、光束初始偏振度和观察点位置决定.交叉偏振度不同于一般偏振度,它的值不再仅仅局限在0~1,而是可以取任何非负值.同时也发现,与一般偏振度的分布趋势截然不同,交叉偏振度在湍流大气中会呈先扩散,后压缩的分布趋势.同时,当相关长度取值相等时,部分相干电磁光束在湍流大气中传输的交叉偏振度不再发生变化.
Abstract:
The cross-spectral density matrix of partially coherent Gaussian-Schell model electromagnetic beams propagating in atmospheric turbulence is derived.Based on the theory of degree of cross-polarization,the behaviour of partially coherent electromagnetic beams propagating through the atmospheric turbulence is investigated.It is shown that the degree of cross-polarization depends on the refraction index structure constant of turbulence,the correlation length of the source,the initial degree of polarization and the observation point.The degree of polarization is different from the usual degree of polarization which is restricted to the range 0~1,it may take on any nonnegative values.It is also found,the distribution of degree of cross-polarization is different from the usual degree of polarization,presents the trend of first diffuse then shrink.And,when the correlation length of the source takes same values,the degree of cross-polarization which the beams propagate in atmospheric turbulence will keep invariant value.

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相似文献/References:

[1]张国文,蒲继雄.部分相干电磁光束在线性增益(损耗)介质中的传输特性[J].华侨大学学报(自然科学版),2009,30(3):261.[doi:10.11830/ISSN.1000-5013.2009.03.0261]
　ZHANG Guo-wen,PU Ji-xiong.The Properties of Partially Coherent Electromagnetic Beams Propagating in Linear Gain or Loss Media[J].Journal of Huaqiao University(Natural Science),2009,30(1):261.[doi:10.11830/ISSN.1000-5013.2009.03.0261]

备注/Memo

备注/Memo:
福建省科技计划重点项目(2007H0027)
更新日期/Last Update: 2014-03-23