Chinese Optics, Volume. 16, Issue 6, 1365(2023)
Design of an optical system for generating ring-shaped laser beam
Fig. 1. Transmissive-reflective combined ring-shaped beam optical system
Fig. 3. (a) Gaussian light intensity distribution curves and (b) projection height curve under different apodization factors
Fig. 4. Transmission flat-topped beam shaping system and the results of the system
Fig. 6. Relationship between the half vertex angle
Fig. 7. The optical system and welding application when the moving mirror is an inner conical mirror
Fig. 8. Transmission-reflection optical system and ring-shaped laser beam size parameters of focal plane
Fig. 9. Defocused light intensity distribution maps before and after flat top beam shaping
Fig. 12. Adjustment diagram of focused ring-shaped laser beam radius and comparison curve between theoretical and actual measurement values
Table 1. Initial condition
View tableView in ArticleTable 1. Initial condition
入瞳半径 d/mm 波长 λ/nm D /mm S /mm 工作距离 /mm 均匀度 /% 数值 12 632.8 30 15 150~170 >80%
Table 2. Lens parameters
View tableView in ArticleTable 2. Lens parameters
有效直径/mm 材料 厚度/mm 曲率半径/mm Conic A4 A6 A8 A10 面型1 27 PMMA 15 5 −1.914 1.047×10−4 −3.943×10−7 1.167×10−9 −1.609×10−12 面型2 36 PMMA 12 17.877 −0.959 −1.983×10−4 3.056×10−8 −4.444×10−11 7.283×10−14
Table 3. Parameters of characteristic points on the mirror and surface
View tableView in ArticleTable 3. Parameters of characteristic points on the mirror and surface
α(°) Q F f/mm K θ(°) L/mm ΔZ/mm 材料 数值 45 (18，−114.04) (−50，−22.04) 160 (70，−180.04) 16 27.2 4.5 7075-T6
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Bao-hua CHEN, Quan-ying WU, Yun-hai TANG, Jun-liu FAN, Xiao-yi CHEN, Hao-mo YU, Yi SUN. Design of an optical system for generating ring-shaped laser beam[J]. Chinese Optics, 2023, 16(6): 1365
Category: Original Article
Received: Mar. 20, 2023
Accepted: --
Published Online: Nov. 29, 2023
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