光学 精密工程, 2009, 17 (3): 542, 网络出版: 2009-10-28   

惯性约束聚变束靶耦合的监测及精度分析

Measurement and precision analysis on alignment of laser and target in ICF
作者单位
哈尔滨工业大学 自动化测试与控制系,黑龙江 哈尔滨 150001
摘要
为了提高惯性约束聚变实验中高功率激光驱动装置束靶耦合的精度,介绍了几种束靶耦合监测方法,包括靶室外直接监测,靶室内直接监测,靶室内基于共轭原理的传感器监测等。分析了各种方法的优缺点,并重点对基于光学共轭原理的传感器的耦合精度进行了研究,分析了图像测量误差,CCD保护玻璃引入的误差,调焦导轨运动时引入的误差及传感器标定装校时引入的误差。实验测试及精度分析表明,共轭式传感器引入的束靶耦合误差为±10 μm。采用这种基于光学共轭原理的传感器,可以实现大型激光驱动装置的快速、高精度束靶耦合。
Abstract
To improve the alignment precision of laser beam and target for high power laser driving device in Inertia Confinement Fusion(ICF),several kinds of laser beam aligning methods,such as inside chamber direct alignment method, outside chamber direct alignment method, and indirect alignment method with Laser and Target Alignment Sensor(LTAS) based on optical conjugate principle, were induced and their advantages and disadvantages were analyzed. Then,the precision of the last method including the image measuring error,the errors introduced by protective glass of CCD, the movement errors of guides and the calibration error of Laser and Target Alignment Sensor(LTAS) was discussed. The experiments and precision analysis indicated that the laser beam aligning precision induced by LTAS is ±10 μm, which shows proposed LTAS can rapidly and exactly align the laser and target of large-scale laser driving device.

刘炳国, 刘国栋, 浦昭邦, 庄志涛, 陈凤东. 惯性约束聚变束靶耦合的监测及精度分析[J]. 光学 精密工程, 2009, 17(3): 542. LIU Bing-guo, LIU Guo-dong, PU Zhao-bang, ZHUANG Zhi-Tao, CHEN Feng-Dong. Measurement and precision analysis on alignment of laser and target in ICF[J]. Optics and Precision Engineering, 2009, 17(3): 542.

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