Fig. 1. Schematic diagram of homogenization with waveguide

Fig. 2. Optical configuration of the direct-imaging pump

Fig. 3. Intensity distribution of the direct-imaging pump

Fig. 4. Optical configuration of the waveguide-homogenization pump

Fig. 5. Intensity distribution of the waveguide-homogenization pump

Fig. 6. Intensity distribution curve of the pump in the width direction when the bars of the LD array have a point defect

Fig. 7. Schematic diagram of the Innoslab laser amplifier

Fig. 8. Waveguide homogenization pump coupling experimental device

Fig. 9. Pump intensity distribution

Fig. 10. Laser beam quality after amplification

Fig. 11. Waveform of a single pulse when self-oscillation occurs