Qi Bian, Yong Bo, Junwei Zuo, Qinjun Peng. Beam combining/splitting technology of sodium beacon laser for generating sodium guidestars constellation[J]. High Power Laser and Particle Beams, 2023, 35(4): 041011
- High Power Laser and Particle Beams
- Vol. 35, Issue 4, 041011 (2023)
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
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