Nonlinear effects channel high-peak-power laser beams through turbulent air

Researchers at the U.S. Naval Research Laboratory (Washington, DC), University of Alabama (Huntsville, AL), University of Rochester Laboratory for Laser Energetics (Rochester, NY), and Georgetown University (Washington, DC) have shown that for nonlinear high-peak-power beam propagation in which the beam size is smaller than the inner scale size of the turbulence (the smallest eddies produced, limited by the viscosity of air) or the transverse coherence length, the beam remains self-channeled and resists turbulence-induced beam spreading.

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