Xun Li, Ming Li, Hongjun Liu. Enhanced optical absorption surface of titanium fabricated by a femtosecond laser assisted with airflow pressure[J]. Chinese Optics Letters, 2021, 19(9): 091404
- Chinese Optics Letters
- Vol. 19, Issue 9, 091404 (2021)
Fig. 1. Schematic of the fs laser processing system assisted with airflow pressure.
Fig. 2. Three-dimensional morphology of the samples fabricated by the fs laser at different scanning speeds: (a) 20 mm/s, (b) 30 mm/s, (c) 40 mm/s, and (d) 60 mm/s.
Fig. 3. Laser power dependence of three-dimensional micro/nanostructures’ morphology: (a) 2.5 W, (b) 5 W, (c) 10 W, (d) 15 W, and (e) 20 W.
Fig. 4. Reflection spectra of the samples with hybrid micro/nanostructures induced by the fs laser at different laser power and scanning speed.
Fig. 5. Three-dimensional micro/nanostructures’ morphology of samples fabricated by the fs laser assisted with different airflow pressures: (a) 0 MPa, (b) 0.05 MPa, (c) 0.1 MPa, and (d) 0.15 MPa.
Fig. 6. Changing mechanism of the micro/nanostructures' morphology by airflow pressure.
Fig. 7. Reflection spectra of the samples fabricated by the fs laser under different airflow pressures.
Fig. 8. XRD patterns of sample surfaces with different airflow pressures at 20 W and 50 mm/s.
Fig. 9. Blackening samples of Ti alloy before and after HLTTs.
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Table 1. Average Reflectivity of Samples Fabricated Under Different Laser Parameters Assisted with Airflow Before and After High and Low Temperature Tests
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