Fig. 1. Schematic of incoherent beam combining and polarization splitting for two pulsed sodium lasers. BC, beam collimator; HW, half-wave plate; HR: high reflective mirror; PC: polarization coupler; EOM: electro-optical modulator; BS: beam splitter; PS: polarization splitter

Fig. 2. Schematic of two pulsed laser beams by polarization and sequence combining

Fig. 3. Power-stability test of the combined sodium laser at the highest output over 30 min

Fig. 4. Pulse train of the combined sodium laser observed by an oscilloscope

Fig. 5. Two-dimensional spatial intensity profiles of sodium beacon laser beam

Fig. 6. Pointing measurement of the combined laser beam

Fig. 7. Images of generating guide stars for sodium beacon laser on-sky tests