Front Front-end system used in PM PM-Yb fiber laser for high high-peakpower laser system

摘要

We have demonstrated the generation of optional pulse shape by Yb doped fiberrnlaser system for EUV lithography laser and IFE front front-end system. Yb fiber laser systemrnoperated the polarization polarization-maintained pulses for singl single-transverse and -longitudinal mode usingrnfiber Bragg grating (FBG). The several output waveforms obtained including rectangularrnpulses from 1ns to 12.5 ns with a 500 500-ps rise time, and Gaussian pulses from 1 ns to 25 ns. Thernincrease in output power has be been achieved to 30W (300 en μJ, 100kHz) with a 30 30-μm core Ybrndouble double-clad LMA fiber.