| 一种输出无衍射光束的金属环状波导激光器的光场特性 |
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| 引用本文： | 吴志伟,黄元庆. 一种输出无衍射光束的金属环状波导激光器的光场特性[J]. 厦门大学学报(自然科学版), 2012, 51(3): 316-320 |
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| 作者姓名： | 吴志伟 黄元庆 |
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| 作者单位： | 1. 泉州师范学院物理与信息工程学院,福建泉州,362000
2. 厦门大学物理与机电工程学院,福建厦门,361005 |
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| 摘 要： | 介绍一种输出无衍射光束的金属环状波导激光器,以横向电(TE)模为例详细分析了金属环状波导谐振腔内的电磁场分布,耦合损耗,输出光束近、远场特性.通过几何光学分析了产生无衍射光的原理,计算了无衍射光的相关参数.由衍射积分理论分析和模拟了输出光束的光强分布特性,所得分析结果与几何光学分析是一致的.结果表明,该器件能够输出无衍射光束.
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| 关 键 词： | 环状波导 近场特性 远场特性 无衍射光束 |
Light Field Characteristics of Annular Waveguide Laser with All-metallic Materials for Generating Non-diffracting Beam |
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| WU Zhi-wei , HUANG Yuan-qing. Light Field Characteristics of Annular Waveguide Laser with All-metallic Materials for Generating Non-diffracting Beam[J]. Journal of Xiamen University(Natural Science), 2012, 51(3): 316-320 |
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| Authors: | WU Zhi-wei HUANG Yuan-qing |
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| Affiliation: | 2* (1.Physics & Information Communication Academy,Quanzhou Normal College,Quanzhou 362000,China; 2.School of Physics and Mechanical & Electrical Engineering,Xiamen University,Xiamen 361005,China) |
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| Abstract: | The situation of an annular waveguide laser with all-metallic materials for generating non-diffracting beams is presented.The properties of the electromagnetic field distribution,near-and far-field and the coupling loss of the transverse electric(TE) mode in the resonator are analyzed in detail.The formation mechanism of the non-diffracting beam is analyzed by geometrical optics,and the relevant parameters are also calculated.The intensity distribution of output beam is simulated by diffraction and interference theory.The results are basically consistent with the geometrical optics.The research shows that non-diffracting beams can be generated by this element. |
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| Keywords: | annular waveguide near field properties far field properties non-diffracting beam |
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