| 正交光楔列阵光学系统的小尺度不均匀性 |
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| 引用本文： | 郑建洲,于清旭,关寿华. 正交光楔列阵光学系统的小尺度不均匀性[J]. 光学精密工程, 2009, 17(1) |
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| 作者姓名： | 郑建洲 于清旭 关寿华 |
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| 作者单位： | 大连理工大学,应用物理与光电技术学院,辽宁,大连,116024;大连民族学院,理学院,辽宁,大连,116600;大连理工大学,应用物理与光电技术学院,辽宁,大连,116024 |
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| 摘 要： | 推导出了正交光楔列阵(CSWA)聚焦系统的多光束干涉条纹主极大和两相邻主极大间的次极大间距公式,并根据广义惠更斯-菲涅耳衍射积分理论,通过数值计算证明了CSWA的小尺度不均匀性的变化规律与物理光学的公式符合.另外,提出改善小尺度不均匀性的两种方法:楔角偏差和离焦打靶技术.计算分析和实验研究表明,优化楔角偏差和离焦量的量值,即δpj=2.0%,ΔZ=2 mm时,干涉主极大间隔与没加这两种技术时相比减小了6倍,小尺度的不均匀性得到了明显的改善.
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| 关 键 词： | 激光技术 小尺度不均匀性 正交光楔列阵 楔角偏差 离焦打靶 |
Small-scale non-uniformity of cross segmented wedge array focus system |
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| ZHENG Jian-zhou,YU Qing-xu,GUAN Shou-hua. Small-scale non-uniformity of cross segmented wedge array focus system[J]. Optics and Precision Engineering, 2009, 17(1) |
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| Authors: | ZHENG Jian-zhou YU Qing-xu GUAN Shou-hua |
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| Affiliation: | 1.School of Physics and Optoelectronic Technology;Dalian University of Technology;Dalian 116024;China;2.School of Science;Dalian Nationalities University;Dalian 116600;China |
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| Abstract: | The Separation of Interference Fringes of the Main Diffraction Maxima(SIFMDM) and the second maximum for Cross Segmented Wedge Array(CSWA) focus system were derived,and the change rules of the Small-scale Irradiation Non-uniformity(SSINU) were confirmed by numerical calculations based on the generalized Huygens-Fresnel diffraction integral theory.The two methods of reducing the SSINU, the Deviation of Wedge Angles(DWA) and the Off-focal Laser Radiation on the Target(OFLRT),were proposed.Theoretical study an... |
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