Chinese Optics Letters, 2018, 16 (3): 031401, Published Online: Jul. 13, 2018  

Femtosecond laser highly-efficient plane processing based on an axicon-generated donut-shaped beam Download: 728次

Author Affiliations
State Key Laboratory of High Performance and Complex Manufacturing, Central South University, Changsha 410083, China
Abstract
A simple technique is proposed for highly-efficient plane processing fully based on femtosecond laser beam shaping. The laser intensity distribution is transformed from a Gaussian to a donut shape. As the donut-shaped focus seems like a flat top from the side view, a plane with a high level of flatness is obtained directly by scanning once. By applying it to polishing experiments, the surface roughness can be improved significantly. The influence of scanning speed, laser pulse energy, and scanning times on the roughness is also discussed. Moreover, the scanning width can be flexibly controlled in a wide range.

Zhi Luo, Cong Wang, Xinran Dong, Ji’an Duan. Femtosecond laser highly-efficient plane processing based on an axicon-generated donut-shaped beam[J]. Chinese Optics Letters, 2018, 16(3): 031401.

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