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.
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This work was performed under the auspices of the US Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.
The authors declare no competing financial interests.
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Simultaneous polarization transformation and amplification of multi-petawatt laser pulses in magnetized plasmas
Optics Express (2019)
Physical Review Letters (2019)
Physics of Plasmas (2019)
Optics Letters (2019)
Applied Optics (2018)