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Update of Laser Megajoule large optics wavefront performance requirements

机译：Laser Megajoule大型光学波前性能要求的更新

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摘要

The Laser Megajoule (LMJ) facility has about 40 large optics per beam. For 22 bundles with 8 beams per bundle, it will contain about 7.000 optical components. First experiments are scheduled at the end of 2014. LMJ components are now being delivered. Therefore, a set of acceptance criteria is needed when the optical components are exceeding the specifications. This set of rules is critical even for a small non-conformance ratio. This paper emphasizes the methodology applied to check or re-evaluate the wavefront requirements of LMJ large optics. First we remind how LMJ large component optical specifications are expressed and we describe their corresponding impacts on the laser chain. Depending on the location of the component in the laser chain, we explain the criteria on the laser performance considered in our impact analyses. Then, we give a review of the studied propagation issues. The performance analyses are mainly based on numerical simulations with Miro propagation simulation software. Analytical representations for the wavefront allow to study the propagation downstream local surface or bulk defects and also the propagation of a residual periodic aberration along the laser chain. Generation of random phase maps is also used a lot to study the propagation of component wavefront/surface errors, either with uniform distribution and controlled rms value on specific spatial bands, or following a specific wavefront/surface Power Spectral Distribution (PSD).
机译：激光兆焦（LMJ）设施每束约有40个大型光学元件。对于22个束，每个束8个光束，它将包含约7.000个光学组件。计划于2014年底进行首次实验。LMJ组件现已交付。因此，当光学元件超过规格时，需要一套验收标准。即使对于较小的不合格率，这组规则也至关重要。本文重点介绍了用于检查或重新评估LMJ大型光学器件的波前要求的方法。首先，我们提醒一下LMJ大组件光学规范的表达方式，并描述它们对激光链的相应影响。根据组件在激光链中的位置，我们会在冲击分析中解释有关激光性能的标准。然后，我们对研究的传播问题进行了回顾。性能分析主要基于使用Miro传播模拟软件进行的数值模拟。波前的分析表示可以研究下游局部表面或整体缺陷的传播，还可以研究沿激光链的残余周期性像差的传播。随机相位图的生成也被大量用于研究分量波前/表面误差的传播，这些误差在特定空间频带上具有均匀分布和受控均方根值，或者遵循特定的波前/表面功率谱分布（PSD）。

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  • 来源
    《High power lasers for fusion research II》|2013年|86020G.1-86020G.7|共7页
  • 会议地点 San Francisco CA(US)
  • 作者

    Stephane Mainguy; Jean-Philippe Airiau; Thierry Bart; Vincent Beau; Edouard Bordenave; Stephane Bouillet; Christian Chappuis; Sandrine Chico; Philippe Cormont; Nathalie Darbois; Jerome Daurios; Vincent Denis; Laure Eupherte; Nathalie Ferriou-Daurios; Servane Fontaine; G;

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    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA - Ile de France, BP 12, 91680 Bruyeres le Chatel, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CELIA, 351, cours de la liberation, 33405 Talence, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

    CEA-CESTA, 15, avenue des sablieres CS 60001, 33116 Le Barp Cedex, France;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    high-power laser; laser performance; optical component; wavefront specifications; numerical simulation; Laser Megajoule; Miro software;

    机译：大功率激光激光性能光学元件波前规格；数值模拟激光兆焦; Miro软件;

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