Fig. 1. Cross section of LD side-pumped Nd:YAG module

Fig. 2. Thermal lens focal length versus the pump power for a single LD side-pumped Nd:YAG module

Fig. 3. Schematic of the Q-switched LD side-pumped Nd:YAG oscillator

Fig. 4. Diameter of the fundamental mode versus the thermal focal length

Fig. 5. Laser dynamic simulation results of the discrete coefficient versus the pump rate 泵浦速率与调Q脉冲强度的离散系数 的关系的激光动力学仿真模拟结果

Fig. 6. Average output power versus pump power after optimization

Fig. 7. Typical experimental measurement (blue) and numerical calculation (red) results of pulse train at pump powers of 669 W and 629.5 W

Fig. 8. M² measurement result after optimization. Inset is the beam far-filed intensity profile