Fabrication of diamond ultra-fine structures by femtosecond laser

Tong Jiang; Si Gao; Zhennan Tian; Hanzhuang Zhang; Ligang Niu

doi:doi:10.3788/COL202018.101402

Chinese Optics Letters, 2020, 18 (10): 101402, Published Online: Sep. 3, 2020

Fabrication of diamond ultra-fine structures by femtosecond laser Download： 671次

Tong Jiang ¹Si Gao ²Zhennan Tian ^1,2Hanzhuang Zhang ¹Ligang Niu ^2,*

Author Affiliations

¹ College of Physics, Jilin University, Changchun 130012, China

² State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China

Figures & Tables

Fig. 1. Sketch diagram of femtosecond laser processing system.

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Fig. 2. SEM images of stripe structures induced by different laser powers: (a) 2.50 μW, (b) 2.76 μW, (c) 2.92 μW, and (d) 3.07 μW; insets are the Fourier transform spectrum patterns corresponding to the stripes processed with different laser powers.

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Fig. 3. Two-cycle nano composite structures induced by different scanning directions and laser polarization directions: (a1) the scanning direction is the same as the polarization direction, (b1) the direction of scanning is perpendicular to the polarization direction, (c1) the angle between the directions of scanning and polarization is 45°; (a2)–(c2) are the corresponding magnification images of (a1)–(c1).

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Fig. 4. Surface enhanced Raman scattering (SERS) measurements of the diamond surface nano-stripe structure: (a) the R6G molecules of $10^{- 5} mol/L$ were used as probes, and thicknesses of 0 nm, 13 nm, 22 nm, 30 nm, 38 nm, 47 nm, and 55 nm gold films were sputtered on the nano-stripes; (b) R6G molecules with different concentrations with 47-nm-thick gold film on nano-stripe structure.

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Fig. 5. Control of the induced stripe direction in the scanning tracks by changing the polarization direction of the laser: (a) the scanning direction is the same as the polarization direction, (b) the direction of scanning is perpendicular to the direction of polarization, (c) the angle between the direction of scanning and the direction of polarization is 45°, and (d) the direction of polarization changes 90°, (e) the direction of polarization changes 180°, and (f) the direction of polarization changes 360°.

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Fig. 6. Circular micro-nano composite structures were prepared when the laser scanning path and the polarization direction were changing at the same time: (a1), (a2) fixed polarization direction; (b1), (b2), (c1), (c2) change of polarization direction from the initial phase of $2 π$ ; (d1), (d2) change of polarization direction from the initial phase of $4 π$ ; (e1), (e2) change of polarization direction from the initial phase of $6 π$ .

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Tong Jiang, Si Gao, Zhennan Tian, Hanzhuang Zhang, Ligang Niu. Fabrication of diamond ultra-fine structures by femtosecond laser[J]. Chinese Optics Letters, 2020, 18(10): 101402.

Fabrication of diamond ultra-fine structures by femtosecond laser Download： 671次

Fig. 1. Sketch diagram of femtosecond laser processing system.

Fig. 2. SEM images of stripe structures induced by different laser powers: (a) 2.50 μW, (b) 2.76 μW, (c) 2.92 μW, and (d) 3.07 μW; insets are the Fourier transform spectrum patterns corresponding to the stripes processed with different laser powers.

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Fabrication of diamond ultra-fine structures by femtosecond laser Download： 671次

Fig. 1. Sketch diagram of femtosecond laser processing system.

Fig. 2. SEM images of stripe structures induced by different laser powers: (a) 2.50 μW, (b) 2.76 μW, (c) 2.92 μW, and (d) 3.07 μW; insets are the Fourier transform spectrum patterns corresponding to the stripes processed with different laser powers.

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