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Wavefront control model of a beam control experiment

机译:光束控制实验的波前控制模型

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Abstract: Wavefront control modeling is an important technique for examining the steady state performance and design tradeoffs of many types of beam control systems. The present paper discusses a model for simulating a wide field of view laser projection beam control brassboard experiment. The simulation is designed to optimize system performance over the full field of view during brassboard operation. Simulation results will be utilized to define a minimum set of standard viewing angles at which the brassboard experiment will need to be calibrated. During the experiment, the computer software will interpolate between these discrete calibration angles to obtain the information required to operate at any angle over the full field of view. In the brassboard experiment wavefront sampling is achieved with a Hartmann type outgoing wavefront sensor, which receives slope information from 48 holographic optical elements on the primary mirror. Optical aberrations are corrected by a 97 actuator deformable mirror. Key elements of the simulation are: (1) a deformable mirror model constructed from NASTRAN generated actuator influence functions, (2) an outgoing wavefront sensor model which computes average slope values over the holographic optical elements, and (3) submodels for all budgeted beam control subsystem, sensor and diagnostics error sources. Critical analyses discussed include the characterization of the calibration/interpolation geometry and the expected performance effects as a function of field of view.!
机译:摘要:波前控制建模是检查多种类型的光束控制系统的稳态性能和设计折衷的一项重要技术。本文讨论了一种用于模拟宽视场激光投影光束控制黄铜板实验的模型。该仿真旨在在黄铜板操作期间在整个视野范围内优化系统性能。仿真结果将用于定义需要校准黄铜板实验的最小标准视角集。在实验过程中,计算机软件将在这些离散的校准角度之间进行插值,以获得在整个视野内以任何角度进行操作所需的信息。在黄铜板实验中,使用Hartmann型输出波前传感器实现波前采样,该传感器从主镜上的48个全息光学元件接收斜率信息。光学像差通过97驱动器可变形镜进行校正。模拟的关键要素是:(1)由NASTRAN生成的执行器影响函数构造的可变形镜面模型;(2)计算全息光学元件上的平均斜率值的输出波前传感器模型;以及(3)所有预算光束的子模型控制子系统,传感器和诊断错误源。讨论的关键分析包括校准/插值几何的表征以及视场函数的预期性能影响。

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