Laser-target interaction with induced spatial incoherence

Laser requirements for a laser fusion energy power plant

“…Second, optical beam smoothing (described below) was invented to produce a smooth and controllable laser profile [4,5] . This not only reduced the asymmetry of illumination to acceptable levels; it also importantly reduced the risks of laser-plasma instabilities and of hydrodynamic implosion instabilities [6,7] . Reducing the light scatter from the laser-plasma instabilities also increased the energy gain.…”

Influence of laser wavelength on target irradiation uniformity

“…Many techniques have been proposed to reduce irradiation nonuniformity [1][2][3][4][5][6][7][8][9][10][11]. Now the ICF community has tended to adopt the dynamic phase plate strategy for spatial smoothing, like the distributed phase plate (DPP) [3,4] and the continuous distributed phase plate (CDPP) [5].…”

Ultrabroad bandwidth solitons in fiber amplifier

“…Therefore, the spectrum of the pulse may eventually become larger than the fiber amplifier gain bandwidth. On the other hand, researchers have found that broadband lasers have many advantages [14,15], such as highly smooth focused and symmetric laser beams, and higher efficiency than the conventional lasers. We can well imagine that such merits will surely exert a significant influence on the future of broadband lasers and fiber amplifier.…”