Study on flat-top shaping technology in picosecond laser micro- machining

Nie, Shuzhen; Yu, Jin; Zhao, Ting; Fan, Zhongwei

doi:10.1117/12.2533710

Cited by 1 publication

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1 Aerospace information research institute, Chinese Academy of Sciences, Beijing, 100094, China. 2 National Engineering Research Center for DPSSL, Beijing, 100094, China. 3 University of the Chinese Academy of Sciences, Beijing, 100094, China.…”

Section: Authors' Contributionsmentioning

confidence: 99%

“…With the continuous expansion of laser application, different application objects often put forward different requirements for laser intensity distribution, such as [1][2][3][4][5], linear beam in laser scanning, flattop beam in laser machining, spots array in laser surface treatment, etc. Due to the limitation of Gaussian intensity distribution of traditional laser beam, it is necessary to use shaping technology to convert it into a shaped one with certain spatial intensity distribution [6].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design and analysis of a spatially shaped laser beam used for temperature field simulation

Nie

Zhao

Xiao

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

Laser has controllable space-time characteristics and can be loaded on materials as a heat source in laser manufacturing, laser medical and other fields. In the thermal fatigue test of engine parts, thermal load can also be considered by laser beam. In this paper, a large aperture spatially shaped laser beam with complex and uneven intensity distribution is selected as the heat source for temperature field simulation. Using the method of key nodes selection, the temperature distribution of a few key nodes can reflect the desired temperature field of the whole nodes. Based on finite element model (FEM), through the numerical simulation of the temperature field, optimized intensity distribution of the shaped laser beam is calculated, and a diffractive optics element (DOE) is designed to achieve the shaping effect. The results show that a spatially shaped laser beam can be used for temperature field simulation.

show abstract

Section: Authors' Contributionsmentioning

confidence: 99%