Fig. 1. Absorption spectrum of Nd:MgO:LiNbO₃.

Fig. 2. Energy level structure diagram of Nd:MgO:LiNbO_3.

Fig. 3. Schematic diagram of the thermally boosted pumped Nd:MgO:LiNbO₃ laser.

Fig. 4. Output power with respect to absorbed pump power.

Fig. 5. Change process of laser wavelength with the absorbed pump power: (a) 813 nm pumping, (b) 888 nm pumping.

Fig. 6. Variation trend of the polarization state with the absorbed pump power: (a) 813 nm pumping, (b) 888 nm pumping.

Fig. 7. Output power with respect to the absorbed pump power at 888 nm.

Fig. 8. 1084 nm spots and the beam quality obtained by fitting.