Damage Mechanisms Avoided or Managed for NIF Large Optics
Damage Mechanisms Avoided or Managed for NIF Large Optics
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DOI：
10.13182/fst15-139
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发表时间：
2016-01-01
影响因子：
0.9
通讯作者：
Yang, S. T.
中科院分区：
文献类型：
--
作者：
Manes, K. R.;Spaeth, M. L.;Yang, S. T.
在考虑了所有其他故障模式之后，最终，所有激光器的高性能极限都由光学损伤设定。惯性约束聚变（ICF）的要求推动激光器设计为ICF驱动器从他们最早的日子到这个极限。第一个ICF激光器很小，脉冲很短。他们的目标是提供尽可能多的力量给目标。通常情况下，他们面临的损害，由于高强度对他们的光学。随着对更高激光能量、更长脉冲长度和更好对称性的要求的出现，新的损伤类型也出现了，其中一些是预期的，另一些是意想不到的。本文将讨论在国家点火装置（NIF）激光器的设计、制造和投入运行时，必须考虑、尽可能避免或以其他方式管理的对大型光学器件的各种类型的损坏。由于在以前的ICF系统中获得的经验，而且由于NIF设计人员继续能够避免或管理出现的新的损坏情况，NIF能够满足其要求。
After every other failure mode has been considered, in the end, the high-performance limit of all lasers is set by optical damage. The demands of inertial confinement fusion (ICF) pushed lasers designed as ICF drivers into this limit from their very earliest days. The first ICF lasers were small, and their pulses were short. Their goal was to provide as much power to the target as possible. Typically, they faced damage due to high intensity on their optics. As requests for higher laser energy, longer pulse lengths, and better symmetry appeared, new kinds of damage also emerged, some of them anticipated and others unexpected. This paper will discuss the various types of damage to large optics that had to be considered, avoided to the extent possible, or otherwise managed as the National Ignition Facility (NIF) laser was designed, fabricated, and brought into operation. It has been possible for NIF to meet its requirements because of the experience gained in previous ICF systems and because NIF designers have continued to be able to avoid or manage new damage situations as they have appeared.