Lunbin Zhou, Kai Feng, Dong Wang, Bin Xu. Research on direct generation of high-power and high-order vortex lasers using defect-mirror technology (Invited)[J]. Infrared and Laser Engineering, 2021, 50(9): 20210408
- Infrared and Laser Engineering
- Vol. 50, Issue 9, 20210408 (2021)
Fig. 1. (a) Schematic diagram of LD-end-pumped V-type Nd:YVO4 vortex laser; (b) Output mirror M3 with several defect spots; (c) 80 μm defect spot
Fig. 2. Output power curves of V-type folded cavity vortex laser
Fig. 3. Lasers spectrum and beam spot of V-type folded cavity observed under fundamental mode condition
Fig. 4. (a) 1.04 W vortex laser beam spot and (b)-(f) interference fringes measured at different output power of vortex lasers using a 80 μm defect spot
Fig. 5. (a) 310 mW vortex laser beam spot and (b)-(f) interference fringes measured at different output power of vortex lasers using a Φ 250 μm defect spot
Fig. 6. (a) Beam spot of an 240 mW 13th-order vortex laser; (b) Corresponding 13th-order vortex laser interference fringe; (c) Interference fringe of an 380 mW 12th-order vortex laser
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