Chinese Optics Letters, 2020, Vol. 18, Issue 10, pp.
Study on Fabrication of Diamond Ultra-fine Structures by Femtosecond Laser [Early Posting]
Tong Jiang, Si Gao, ZhenNan Tian, Zhang Hanzhuang, LiGang Niu
- College of Electronic Science and Engineering
A 400 nm femtosecond laser was used to ablate the surface of HPHT diamond, and the subwavelength surface microstructures 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 ultra-hard and super-stability diamond provides a new idea for the preparation of friction reducing surfaces, nano imprint transfer templates, SERS test substrates, and micro-nano optical structures.