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| 环形光束的聚焦性质研究 | |
| 引用本文： | 卢光山,胡巍,傅喜泉,邓冬梅,郭弘. 环形光束的聚焦性质研究[J]. 光子学报, 2003, 32(2): 209-213 |
| 作者姓名： | 卢光山 胡巍 傅喜泉 邓冬梅 郭弘 |
| 作者单位： | 华南师范大学传输光学实验室,广州,510631 |
| 基金项目： | 国家自然科学基金 (6 978980 1)，广东省自然科学基金(2 0 0 0 30 6 1)，国家高技术惯性约束聚变主题资助项目 |
| 摘 要： | 从理想的环形光束出发,理论上分析了环形聚焦光束在焦点附近的光强分布情况,以及光束内外径之比对聚焦性质的影响.然后利用数值模拟的手段,研究了带软化因子的环形光束的聚焦性质,在整体上给出了环形光束的聚焦性质. |
| 关 键 词： | 环形光束 聚焦光束 软化因子 |
| 收稿时间： | 2002-03-18 |
| 修稿时间： | 2002-03-18 |
Study of Focused Annular Beam |
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| Lu Guangshan,Hu Wei,Fu Xiquan,Deng Dongmei,Guo Hong Laboratory of Light Transmission Optics,South China Normal University,Guangzhou. Study of Focused Annular Beam[J]. Acta Photonica Sinica, 2003, 32(2): 209-213 | |
| Authors: | Lu Guangshan Hu Wei Fu Xiquan Deng Dongmei Guo Hong Laboratory of Light Transmission Optics South China Normal University Guangzhou |
| Affiliation: | Lu Guangshan,Hu Wei,Fu Xiquan,Deng Dongmei,Guo Hong Laboratory of Light Transmission Optics,South China Normal University,Guangzhou 510631 |
| Abstract: | Using theoretic analysis,the focusing properties of an ideal annular beam are given. The intensity distribution near the focal point is given explicitly to show the influence of the ratio of inner to outer radius. A practice soft-edge annular beam is also studied numerically and the similar properties are obtained to confirm our analysis. |
| Keywords: | Annular beam Focused beam Softening factor |
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