Fig. 1. Schematic of SHG system

Fig. 2. The spot size at the center of M1 and M2 when output power of TA is (a) 0.4 W, (b) 1.0 W, (c) 1.9 W, (d) 2.9 W

Fig. 3. Equivalent focal length of the thermal lens effect as a function of TA output power

Fig. 4. $h\left(\sigma ,B,\xi \right)$ as a function of $\xi$

Fig. 5. Output power as a function of input power

Fig. 6. Output power as a function of incoupler reflectiviy

Fig. 7. Output power as a function of crystal temperature