Breaking through the limits of a single fiber laser amplifier: Coherent beam combination

https://phys.org/news/2024-01-limits-fiber-laser-amplifier-coherent.html

"filled aperture coherent beam combined ultrafast fiber laser... precise high-order dispersion after grating compression... average power output 403 W, 0.5 mJ pulse energy, 260 fs, beam quality (M2 <1.2), power stability (RMS <0.5%)... optimizes pulse width with superior improvement in pulse quality... CBC operates average power >230 W/ channel, simplifying system complexity and operational difficulty... future: 4 channel coherent synthesis increasing power to kW- and pulse energy to mJ-levels"