Fig. 1. Resonator model

Fig. 2. Theoretical simulation results. (a) Simulated light spot when the polarizer angle is −10°; (b) Simulated light spot when the polarizer angle is 10° (Define the minimum power Glan-prism angle as 0°)

Fig. 3. Experimental device diagram

Fig. 4. Normalized transmission power as a function of polarizer angle for (a) free running operation and (b) linear polarization operation

Fig. 5. Relation between output power and pump power for free operation and linear polarization operation

Fig. 6. (a) Spectrum in free-running operation; (b) Spectrum of linearly polarized

Fig. 7. Laser spot at different angles of the Glan-prism. (a) Glan-prism angle is −10°; (b) Glan-prism angle is 10° (Define the minimum power Glan-prism angle as 0°)

Fig. 8. (a) Beam quality in free running operation; (b) Beam quality of 40° linear polarization; (c) Beam quality of 130° linear polarization