Heyan Gao, Xing Jin, Lan Li, Meng Yao, Ying Wang. Effect of energy density on material migration mechanism in millisecond laser ablation of aluminum target[J]. Infrared and Laser Engineering, 2021, 50(S2): 20210264
- Infrared and Laser Engineering
- Vol. 50, Issue S2, 20210264 (2021)
Fig. 1. Experimental setup
Fig. 2. Laser output intensity distribution with pulse width (use FWHM as the pulsed width, normalized at its maximum)
Fig. 3. Image of the target material moving when the laser energy density is 3 969.09 J/cm2
Fig. 4. Image of the target material moving when the laser energy density is 2 496.34 J/cm2
Fig. 5. Image of the target material moving when the laser energy density is 808.41 J/cm2
Fig. 6. Moving speed of the target vapor front with different laser energy densities
Fig. 7. 5x microscopic images of ablation hole with different energy densities
Fig. 8. Image of cracks inside the ablation hole at energy densities of 463.10 J/cm2(10x)
Fig. 9. Depth extended microscopic image of ablation hole at two energy densities (5x)
Fig. 10. Curve of mass loss and specific energy of ablation with energy density
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