中国激光, 2020, 47 (9): 0905001, 网络出版: 2020-09-16
大遮拦比薄管激光环域像差校正方法 
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Method for Annular Aberration Correction of Large-Aperture Thin-Wall Tube Lasers
图 & 表
图 1. 薄管激光环域像差的形成机理及校正方案。(a)形成机理;(b)校正方案
Fig. 1. Formation mechanism and correction scheme of thin tube laser ring-domain aberration. (a) Formation mechanism; (b) correction scheme
图 2. 环形边缘驱动变形镜的模型及驱动器和子孔径的排布方式。(a)驱动器的排布方式;(b)变形镜的正面;(c)变形镜的侧面;(d) SHWS子孔径的排布方式
Fig. 2. Model of ring-shaped edge-driven deformable mirror and arrangement of driver and sub-aperture. (a) Arrangement of actuators; (b) front of deformable mirror; (c) side of deformable mirror; (d) arrangement of SHWS sub-aperture
图 3. 不同驱动器的影响函数分布情况。(a)内环驱动器;(b)外环驱动器
Fig. 3. Distribution of influence functions of different drivers. (a) Inner ring driver; (b) outer ring driver
图 4. 校正面形及拟合残差。(a)校正离焦面形;(b)校正像散面形;(c)校正慧差面形;(d)离焦残差;(e)像散残差;(f)慧差残差
Fig. 4. Correct surface shapes and fitting residuals. (a) Correct defocus surface shape; (b) correct astigmatic surface shape; (c) correct coma surface shape; (d) defocus residual; (e) astigmatic residual; (f) comatic residual
图 5. 大遮拦比薄管激光环域像差的校正示意图
Fig. 5. Schematic of laser ring aberration correction for large obstruction ratio thin tube
图 6. 薄管激光的畸变波前分布情况。(a)初始波前;(b)去倾斜后波前
Fig. 6. Distortion wavefront distribution of thin tube laser. (a) Initial wavefront; (b) wavefront after tilting
图 7. 薄管激光波前校正和远场光强分布。(a)校正的波前面形;(b)波前拟合残差;(c)校正前的光强分布;(d)校正后的光强分布
Fig. 7. Thin tube laser wavefront correction and far-field light intensity distribution. (a) Corrected wave front shape; (b) wavefront fitting residual; (c) light intensity distribution before correction; (d) light intensity distribution after correction
图 8. 镜面应变与应力的分布情况。(a)形变分布;(b)应力分布
Fig. 8. Mirror strain and stress distribution. (a) Deformation distribution; (b) stress distribution
表 1校正前后的波前面形和光束质量效果对比
Table1. Comparison of wavefront shape and beam quality before and after correction
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表 2角向配准误差对像差校正的影响
Table2. Effect of angular registration error on aberration correction
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余江川, 田博宇, 钟哲强, 张彬, 张小民. 大遮拦比薄管激光环域像差校正方法[J]. 中国激光, 2020, 47(9): 0905001. Yu Jiangchuan, Tian Boyu, Zhong Zheqiang, Zhang Bin, Zhang Xiaomin. Method for Annular Aberration Correction of Large-Aperture Thin-Wall Tube Lasers[J]. Chinese Journal of Lasers, 2020, 47(9): 0905001.
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