Chinese Optics Letters, Volume. 19, Issue 9, 091404(2021)
Enhanced optical absorption surface of titanium fabricated by a femtosecond laser assisted with airflow pressure
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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.
Table 1. Average Reflectivity of Samples Fabricated Under Different Laser Parameters Assisted with Airflow Before and After High and Low Temperature Tests
View tableView in ArticleTable 1. Average Reflectivity of Samples Fabricated Under Different Laser Parameters Assisted with Airflow Before and After High and Low Temperature Tests
Parameter Reflectivity/% 0 MPa 0.05 MPa 0.1 MPa 0.15 MPa Before After Before After Before After Before After 2.5 W, 50 mm/s 4.96 5.10 4.47 4.67 4.58 4.77 4.81 5.01 5.0 W, 50 mm/s 4.39 4.55 3.88 4.01 3.91 4.06 4.19 4.32 10 W, 50 mm/s 4.15 4.25 3.95 4.06 3.86 3.99 3.92 4.05 15 W, 50 mm/s 3.58 3.81 3.22 3.45 3.17 3.21 3.24 3.38 20 W, 50 mm/s 2.83 2.97 2.45 2.59 2.31 2.43 2.59 2.71 20 W, 20 mm/s 3.12 3.28 3.05 3.15 2.46 2.61 2.85 2.99 20 W, 30 mm/s 4.23 4.45 3.79 3.97 3.53 3.77 3.69 3.81 20 W, 40 mm/s 4.09 4.29 3.82 4.09 3.49 3.71 3.75 3.94 20 W, 60 mm/s 3.87 3.94 3.15 3.25 3.31 3.41 3.59 3.72
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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
Paper Information
Category: Lasers, Optical Amplifiers, and Laser Optics
Received: Jan. 1, 2021
Accepted: Mar. 4, 2021
Published Online: Jun. 15, 2021
The Author Email: Ming Li (liming@opt.ac.cn), Hongjun Liu (liuhongjun@opt.ac.cn)
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