陇东学院学报
隴東學院學報
롱동학원학보
Journai of Longdong University
2015年
5期
22-27
,共6页
平顶高斯光束%海洋湍流%偏振特性%自构现象
平頂高斯光束%海洋湍流%偏振特性%自構現象
평정고사광속%해양단류%편진특성%자구현상
flat-topped Gaussian beam%oceanic turbulence%polarization properties%reconstruction phe-nomenon
基于光束相干偏振统一理论研究了部分偏振矢量平顶高斯光束在海洋湍流传播时偏振特性的变化，给出了该光束在海洋湍流中传播时交叉谱密度矩阵元的表达式，数值模拟了光束在海洋湍流中传播时光强分布以及偏振特性的变化情况。结果表明：该光束在海洋湍流中传播时偏振度幅值振荡变化，而在远场区偏振度、方位角和椭偏率具有重构现象。
基于光束相榦偏振統一理論研究瞭部分偏振矢量平頂高斯光束在海洋湍流傳播時偏振特性的變化，給齣瞭該光束在海洋湍流中傳播時交扠譜密度矩陣元的錶達式，數值模擬瞭光束在海洋湍流中傳播時光彊分佈以及偏振特性的變化情況。結果錶明：該光束在海洋湍流中傳播時偏振度幅值振盪變化，而在遠場區偏振度、方位角和橢偏率具有重構現象。
기우광속상간편진통일이론연구료부분편진시량평정고사광속재해양단류전파시편진특성적변화，급출료해광속재해양단류중전파시교차보밀도구진원적표체식，수치모의료광속재해양단류중전파시광강분포이급편진특성적변화정황。결과표명：해광속재해양단류중전파시편진도폭치진탕변화，이재원장구편진도、방위각화타편솔구유중구현상。
Changes in polarization properties of partially polarized flat-topped Gaussian beam propagating in oceanic turbulence are studied with the unified theories of coherence and polarization .The formulas for the elements of the cross-spectral density matrix are obtained by analytical methods .Polarization proper-ties such as the degree of polarization ,the orientation angle ,and the degree of ellipticity for the flat-topped beam have been studied by numerical simulation .The results show that the degree of polarization fluctu-ates when the flat-topped beam propagates in the oceanic turbulence ,and they have obvious reconstruction phenomenon in the far-field zone .
