Fig. 1. 1×15 VCSEL linear array

Fig. 2. Pumping configuration of the VCSEL side-pumped rod Nd:YAG laser module. Inset: the simulation of the absorbed pump power distribution in the middle cross section of the ϕ8 mm rod at total pump power of 1135 W

Fig. 3. Output power and optical-to-optical conversion efficiency of the VCSEL-side-pumped rod Nd:YAG laser module versus the pump power under CW operation

Fig. 4. Schematic diagram of the VCSEL side-pumped rod Nd:YAG laser oscillator with telescopic resonator

Fig. 5. Fundamental laser mode radius versus the thermal focal length

Fig. 6. Output power as a function of the pump power

Fig. 7. Measured beam quality factors at the maximum output power. Inset: beam two-dimensional spatial profile

Fig. 8. Power-stability test at the highest output over 200 s. Inset: output power versus the coolant temperature