| 波荡器位相误差对自由电子激光 |
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| 引用本文： | 李新阳,姜文汉. 波荡器位相误差对自由电子激光[J]. 强激光与粒子束, 2002, 14(2): 0-249 |
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| 作者姓名： | 李新阳 姜文汉 |
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| 作者单位： | 1.中国科技大学 国家同步辐射 实验室, 安徽 合肥 230029 |
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| 基金项目： | 国家 8 6 3激光技术领域 ( 86 3-4 10 -6 )资助课题 |
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| 摘 要： | 对波荡器位相误差对自由电子激光小信号增益的影响进行了分析讨论。对低增益情况解析地给出了波荡器位相误差引起的增益降低因子。结果表明:与自发辐射类似增益的降低与位相误差的方差成简单的指数关系，位相误差的线性变化部分引起最大增益的位移，还表明波荡器位相误差存在时Madey定理仍然成立。对高增益情况也给出了波荡器位相误差引起的增益降低因子。
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| 关 键 词： | 自由电子激光 增益 波荡器 位相误差 |
| 文章编号： | 1001-4322(2002)02-0243-07 |
| 收稿时间： | 2001-06-21 |
| 修稿时间： | 2001-06-21 |
Zernike modal wavefront reconstruction error of Hartmann sensor on measuring the atmosphere disturbed wavefront |
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| LI Xin yang,JIANG Wen han. Zernike modal wavefront reconstruction error of Hartmann sensor on measuring the atmosphere disturbed wavefront[J]. High Power Laser and Particle Beams, 2002, 14(2): 0-249 |
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| Authors: | LI Xin yang JIANG Wen han |
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| Affiliation: | 1.National Synchrotron Radiation Laboratory University of Science and Technology of China,P.O.Box 6022,Hefei 230029,China |
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| Abstract: | The Zernike modal wavefront reconstruction error of Hartmann sensor on measuring the atmospheric disturbed wavefront is analyzed in this paper. It's shown that the wavefront reconstruction error is concerned with sub aperture configuration type and the total Zernike mode number used in wavefront reconstruction algorithm. Experiential formulas to calculate the wavefront reconstruction error of a Hartmann sensor in Kolmogorov turbulence are also deduced. The experimental data are analyzed and compared between two Hartmann sensors with 8×8 and 32×32 sub apertures configuration respectively. |
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| Keywords: | Hartmann wavefront sensor modal wavefront reconstruction Zernike polynomials atmospheric turbulence noise |
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