Chinese Optics Letters, Vol. 18, Issue 10, 101402 (2020)
Fabrication of diamond ultra-fine structures by femtosecond laser
Tong Jiang1, Si Gao2, Zhennan Tian1,2, Hanzhuang Zhang1, and Ligang Niu2,*
- 1College of Physics, Jilin University, Changchun 130012, China
- 2State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
A 400 nm femtosecond laser was used to ablate the surface of a high-pressure and high-temperature diamond, and subwavelength surface micro structures with a period of 100 nm were achieved. A variety of micro-nano composite surface structures were prepared by changing the polarization direction and laser scanning direction. By dynamically adjusting the laser polarization and the laser scanning tracks, a maskless direct writing fabrication of micro-nano complex structures was realized. The micro-nano patterning on an ultra-hard and super-stabile diamond provides a new idea for the preparation of friction reducing surfaces, nano imprint transfer templates, surface enhanced Raman scattering test substrates, and micro-nano optical structures.
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