| 各向异性的非相干矢量光束的传播特性 |
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| 引用本文： | 陈园园,王奇,施解龙.各向异性的非相干矢量光束的传播特性[J].光子学报,2004,33(3):360-365. |
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| 作者姓名： | 陈园园 王奇 施解龙 |
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| 作者单位： | 上海大学理学院物理系,上海宝山区,200436;上海大学理学院物理系,上海宝山区,200436;上海大学理学院物理系,上海宝山区,200436 |
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| 基金项目： | 国家自然科学基金 (编号 :60 1770 2 0 )，上海市教委重点学科资助项目 |
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| 摘 要： | 利用坡印亭矢量,研究了相干性为各向异性的非相干矢量光束在自由空间的传输特性,得到了光束横截面上能量分布及演化,导出了角偏振光束中心出现能量峰值的条件,详细分析了相干性对偶极子光束能量旁瓣的影响,并发现各向异性的偶极子光束具有三种不同的演化形式,得到了具体判据.
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| 关 键 词： | 各向异性的非相干性 矢量光束 坡印亭矢量 |
| 收稿时间： | 2003-04-14 |
| 修稿时间： | 2003年4月14日 |
Propagation Characteristics of Anisotropic Incoherent Vector Beams |
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| Institution: | (Department of Physics, Shanghai University, Shanghai 200436, P. R.China) |
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| Abstract: | The propagation characteristics of anisotropic incoherent electromagnetic vector beams in free space are investigated by using Poynting vector method. The energy distribution in the beam cross-section is analyzed, and the condition under which the energy peak happens to be on the center of the azimuthally polarized beams is obtained. Also the influence of incoherence on dipolar beams is studied. There are two sidelobes beside the energy peak of beams, whose location move in the propagation. And the movements of the sidelobes are different to different incoherence. Finially,It is found that there are three different types of evolution of the beam profile during the propagation. |
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| Keywords: | Anisotropic incoherence Vector beams Poynting vect or |
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