Multistep redirection by cross-beam power transfer of ultrahigh-power lasers in a plasma
Multistep redirection by cross-beam power transfer of ultrahigh-power lasers in a plasma
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DOI：
10.1038/nphys2239
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发表时间：
2012-04-01
期刊：
影响因子：
19.6
通讯作者：
Moses, E. I.
中科院分区：
文献类型：
--
作者：
Moody, J. D.;Michel, P.;Moses, E. I.
激光在等离子体中的交叉光束能量传递重定向是利用激光等离子体不稳定性的非线性光学过程的一个重要例子。我们已经在劳伦斯利弗莫尔国家实验室的国家点火设施(NIF)的黑腔等离子体中展示了这一点。四波混频过程导致多个光束中的激光功率改变方向，并增加选定光束的激光功率。通过设置相互作用的激光束的波长间隔来控制这一过程。该技术提供了一种远程重定向或组合高功率激光的方法，而不需要本地光学设备。
Laser redirection by cross-beam power transfer in a plasma is an important example of a nonlinear optics process which uses laser-plasma instabilities to one's advantage. We have demonstrated this in a hohlraum plasma at the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory. A four-wave mixing process causes laser power in multiple beams to change direction and add to the laser power of a selected beam. The process is controlled by setting the wavelength separation of the interacting laser beams. This technique provides a method to remotely re-point or combine high-powered laser beams without the need of local optical apparatus.