| 强激光的计算模拟:平顶高斯光束模型 |
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| 引用本文： | 吕百达,罗时荣.强激光的计算模拟:平顶高斯光束模型[J].红外与激光工程,2001,30(6):457-461. |
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| 作者姓名： | 吕百达 罗时荣 |
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| 作者单位： | 四川大学激光物理与化学研究所, |
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| 基金项目： | 国家高技术惯性约束聚变主题资助项目 (41 6 2 .1 .2 ) |
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| 摘 要： | 基于广义惠更斯－菲涅耳衍射积分，将平顶高斯光束作为一个整体光束，对其基本性质和变换特性作了统一研究。推导出了平顶高斯光束通过有线性增益（损耗）的近轴ABCD光学系统、无光阑和有光阑ABCD光学系统后解析形式的传输方程。对平顶高斯光束的相似变换以及与超高斯光束的一致性也作了分析。所得结果对强激光的模拟提供了一个有用的计算模型。
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| 关 键 词： | 平顶高斯光束 激光 计算模拟 |
| 文章编号： | 1007-2276(2001)06-0457-05 |
| 修稿时间： | 2001年8月20日 |
High-power laser modeling: flattened Gaussian beams |
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| La Bai-da,\ LUO Shi-rong.High-power laser modeling: flattened Gaussian beams[J].Infrared and Laser Engineering,2001,30(6):457-461. |
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| Authors: | La Bai-da \ LUO Shi-rong |
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| Affiliation: | L*a Bai-da,\ LUO Shi-rong |
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| Abstract: | Based on the generalized Huygens-Fresnel diffraction integral, the basic and transformation properties of flattened Gaussian beams are studied in an unified way, where the flattened Gaussian beam is regarded as a whole beam. The analytical propagation equations of flattened Gaussian beams through a paraxial ABCD optical system with linear gain (absorption), unapertured and apertured ABCD systems are derived. The similar transformation of flattened Gaussian beam and correspondency between flattened Gaussian beams and super-Gaussian beams are analyzed. The results provide a useful simulation model for high-power lasers. |
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| Keywords: | Flattened Gaussian beam \ Paraxial ABCD optical system \ Unapertured and apertured cases \ Similar transform \ Correspondency |
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