Chuchu Dong, Jinhai Zou, Hongjian Wang, Han Yao, Xianglong Zeng, Yikun Bu, Zhengqian Luo. Visible-light all-fiber vortex lasers based on mode selective couplers[J]. Chinese Physics B, 2020, 29(9):
- Chinese Physics B
- Vol. 29, Issue 9, (2020)
Fig. 1. (a) Photograph and (b) schematic diagram of the red-light MSC. (c) Transmission spectra of the red-light MSC, the inset shows the LP01 and LP11 modes.
Fig. 2. (a) Photograph and (b) schematic diagram of the green-light MSC. (c) Transmission spectra of the green-light MSC, the inset shows the mode patterns of the LP01 and LP11 modes.
Fig. 3. (a) Photograph and (b) schematic diagram of the 635-nm red-light all-fiber vortex laser.
Fig. 4. Optical spectra of the 635-nm red-light laser at different powers.
Fig. 5. Near-field intensity distributions of the LP11 mode in the red-light all-fiber laser. (a) and (b) Intensity patterns of the LP11 mode. (c) and (d) Intensity profiles of donut-shaped patterns. (e) and (f) Counterclockwise and clockwise spiral interferograms.
Fig. 6. The power of the red vortex laser under different pump powers.
Fig. 7. (a) Photograph and (b) schematic diagram of the 550-nm green-light all-fiber vortex laser.
Fig. 8. Optical spectra of the 550-nm green-light laser at different powers.
Fig. 9. Near-field distributions of azimuthally/radially polarized beams in the green-light all-fiber laser. (a) and (f) Donut-shape intensity profiles. (b)–(e) and (g)–(j) Near-field intensity patterns with rotation of a polarizer.
Fig. 10. Near-field intensity distributions of the LP11 mode in the green-light all-fiber laser. (a) and (b) Intensity patterns of the LP11 mode. (c) and (d) Intensity profiles of donut-shaped patterns. (e) and (f) Counterclockwise and clockwise spiral interferograms.
Fig. 11. The power of the green vortex laser under different pump powers.
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