内光路热效应和像差对远场光束质量的影响 |
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引用本文: | 季小玲,陶向阳,吕百达. 内光路热效应和像差对远场光束质量的影响[J]. 激光技术, 2004, 28(5): 514-517 |
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作者姓名: | 季小玲 陶向阳 吕百达 |
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作者单位: | 四川大学,激光物理与化学研究所,成都,610064;四川师范大学,电子工程学院,成都,610066;四川大学,激光物理与化学研究所,成都,610064;江西师范大学,物理与通信电子学院,南昌,330027 |
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基金项目: | 国家高技术 86 3 80 2资助项目 (A82 30 70 ) |
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摘 要: | 选取桶中功率PIB,Strehl比,β和像散参数wx/wy作为远场光束质量的评价标准,用自编的四维仿真程序就内光路热效应和像差对光束质量的影响作了详细的数值计算和分析。研究表明,离焦、像散和热效应都将导致远场光强分布出现畸变,可聚焦能力降低,光束质量变差。
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关 键 词: | 热效应 强激光 离焦和像散 光束控制系统(内光路) 光束质量 |
文章编号: | 1001-3806(2004)05-0514-04 |
收稿时间: | 2002-11-07 |
修稿时间: | 2002-11-07 |
The influence of thermal effects and aberrations in a beam control system on the beam quality in the far field |
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Abstract: | By using a four-dimensional simulation code,a detailed numerical study of the influence of thermal effects and aberrations in a beam control system on the beam quality is made. The Strehl ratio,β,astigmatism parameters and power in the bucket (PIB) are chosen as criteria for characterizing the beam quality in the far field.It is shown that the defocus,astigmatism and thermal effects result in the distortion of intensity distribution and reduction of the focusability in the far field,thus degrade the beam quality. |
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Keywords: | thermal effect high-power laser defocus and astigmatism beam control system(inner optical system) beam quality |
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