[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):261-266.[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(3):261-266.[doi:10.11830/ISSN.1000-5013.2009.03.0261]
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部分相干电磁光束在线性增益(损耗)介质中的传输特性()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第30卷
期数:
2009年第3期
页码:
261-266
栏目:
出版日期:
2009-05-20

文章信息/Info

Title:
The Properties of Partially Coherent Electromagnetic Beams Propagating in Linear Gain or Loss Media
文章编号:
1000-5013(2009)03-0261-06
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:
部分相干光;  电磁光束;  线性增益介质;  线性损耗介质;  谱密度;  偏振度
Keywords:
partially coherent beams;  electromagnetic beams;  linear gain media;  linear loss media;  spectral density;  degree of polarization
分类号:
O436
DOI:
10.11830/ISSN.1000-5013.2009.03.0261
文献标志码:
A
摘要:
根据Wolf提出的电磁光束模型和部分相干光理论,以电磁高斯-谢尔模型光束为例,推导出光束在线性增益(损耗)介质中传输的交叉谱密度矩阵,研究介质传输场中强度和偏振度的变化特点.研究结果表明,任意电磁光束在线性增益(损耗)介质中传输时,当其为增益(损耗)介质时,会增强(衰减)光束的强度; 但对偏振度却没有太大的影响.波数实部Kr越小,轴上偏振度越大; 相干长度δyy越小,轴上偏振度越大.当光源处的相干长度xδx与δyy取值相同时,尽管传输距离不断增大,光束在传输过程中的偏振度不发生变化.光源处的偏振度P(0)越大,轴上偏振度也越大.
Abstract:
Based on the electromagnetic beams model proposed by Wolf and the propagation theory of partially coherent light,by taking electromagnetic Gaussian Schell-model(EGSM) beams as an example,the expression for the cross-intensity matrix of the beam propagating in linear gain or loss media was derived.The variation characteristics of spectral density and degree of polarization in linear gain or loss media have been studied.It can be shown that,the stochastic electromagnetic beams propagating in linear gain or loss media,when the media property is gain(loss),it will heighten(lower) the spectral density; but it has little of no effect on the degree of polarization.The effects of the wave number Kr or the source coherence length is smaller,the axis degree of polarization is greater.When the values of the coherence length δxx and δxx are the same,even though the transmission distance increasing,the degree of polarization does not change.The greater the source degree of polarization P(0),the axis degree of polarization is greater.

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备注/Memo

备注/Memo:
国家自然科学基金资助项目(60477041); 福建省科技计划重点项目(2007H0027)
更新日期/Last Update: 2014-03-23