激光原型装置结构稳定性指标划分理论及检测
Structure stability index allocation theory and measurement of laser prototype facility
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摘要: 结构稳定性是ICF驱动器一个重要的设计指标。根据激光原型装置（TIL）多程放大、框架式设计的特点，结合矩阵光学对单个光学元件对光束漂移的影响进行了分析，综合不同光学元件对光束漂移的影响，建立了光学元件稳定性指标分配的数学模型，根据原型装置特点对数学模型中各参数之间的关系进行了确定，求解得到了装置内各个光学元件的稳定性指标，以此作为光机系统结构稳定性的设计要求。经过对原型装置光路稳定性指标的测试，光路稳定性漂移x方向和y方向均方根值为2.78 μm，峰谷偏差值x方向和y方向分别为14.4 μm和15.60 μm。结果表明原型装置结构稳定性漂移满足设计要求，稳定性指标划分方法合理。Abstract: Structure stability is an important design index of ICF driver. Based on laser prototype facility(TIL) design characteristic of multi-pass amplifier and frame structure, the optical matrix is used to analyze the single optical element influence on the beam drift and get the mathematic model. Considering all the optical elements influence on the beam drift, the mathematic model of the optical element stability index allocation is built, the parameter relation of the mathematic model is defined according to the structure characteristic of TIL, the stability index of each optical element is got as the support structure design index. Charge-coupled device(CCD) detect technology is used to measure the general beam stability of TIL. The root mean square beam drift in x and y direction are 2.78
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Key words:
- til /
- optical element /
- stability index allocation /
- beam drift
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