Fig. 1. Schematic of MCC encapsulated semiconductor laser mini-bar array

Fig. 2. Divergence angle and spots after fast axis collimation. (a) Divergence angle; (b) spots

Fig. 3. Schematic and result of beam shaping. (a) Schematic; (b) spot contrast before and after beam shaping

Fig. 4. Divergence angle and light field distribution after slow axis collimation. (a) Divergence angle; (b) light field distribution

Fig. 5. Submodule arrangement. (a) Submodule consisting of 4 mini-bars; (b) schematic of linear array spatial arrangement structure of

Fig. 6. Light field distribution after spatial beam combination

Fig. 7. Optical fiber coupling of diode laser module.(a) Sketch of diode laser coupling source; (b) optical field distribution on optical fiber

Fig. 8. Experimental results of semiconductor laser module

Fig. 9. Power consistency of 20 semiconductor laser modules

Fig. 10. Structural block diagram of 15 kW laser

Fig. 11. Power-current curve of 15 kW laser

Fig. 12. Measurement results of light spot under 1000 μm core diameter. (a) Length; (b) width