Zhiwei Xie, Shiyun Dong, Shixing Yan, Enzhong Li, Hongbin Wang, Chonghe Li. Morphological Adjustment of 304 Stainless Steel by Picosecond Laser Micro-Nano Fabrication[J]. Laser & Optoelectronics Progress, 2018, 55(3): 031402
- Laser & Optoelectronics Progress
- Vol. 55, Issue 3, 031402 (2018)
Fig. 1. Schematic of picosecond laser processing system
Fig. 2. (a) Schematic of picosecond laser processing route; (b) schematic of grating micro-nano structure
Fig. 3. Schematic of serrated morphology at bottom of grating micro-nano structure
Fig. 4. Single pulse energy density and laser ablation rate versus average power
Fig. 5. Width and depth of grating micro-nano structure versus average power
Fig. 6. Morphologies of grating micro-nano structures under different average powers. (a) 1.4 W; (b) 7.0 W
Fig. 7. Schematic of picosecond laser spot overlap
Fig. 8. Spot overlap rate and laser ablation rate versus scanning speed
Fig. 9. SEM images of grating micro-nano structures under different scanning speeds. (a) 200 mm·s-1; (b) 700 mm·s-1
Fig. 10. Width and depth of grating micro-nano structures under different scanning speeds
Fig. 11. Pulse number and laser ablation rate versus processing times
Fig. 12. Width and depth of grating micro-nano structures versus processing times
Fig. 13. 3D morphologies of grating micro-nano structures under different processing times. (a) 40; (b) 50
Fig. 14. Micro-nano structure on stainless steel surface. (a) 3D morphology; (b) SEM image
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