Infrared and Laser Engineering, Volume. 53, Issue 2, 20230587(2024)
Design method of beam shaping system for double free-form surfaces based on Virtual Surface Iteration method
Figures & Tables(14)
Fig. 1. Schematic diagram of a coaxial double free-form beam shaping system
Fig. 2. Grid diagram of energy mapping between the input beam and output beam
Fig. 3. (a) Schematic diagram of solving adjacent points on the free-form surface; (b) Schematic diagram of solving all discrete points of the free-form surface
Fig. 4. The difference between the virtual surface and the free-form surface in the design process of a double free-from beam shaping system
Fig. 5. Schematic diagram of the off-axis two-mirror beam shaping system
Fig. 6. (a) Influence of the beam amplification ratio on the misalignment; (b) Influence of the axial distance between two free-form surfaces on the misalignment
Fig. 9. (a) Ray tracing simulation diagram of a system designed by the Single Virtual Surface method; (b) Ray tracing simulation diagram of a system designed by the VSI method; (c) Simulation diagram of the irradiance of the target surface of the system designed by the Single Virtual Surface method; (d) Simulation diagram of the irradiance of the target surface of the system designed by the VSI method
Fig. 10. (a) Comparison diagram of misalignment of beam shaping system with different beam amplification ratios designed by the two methods; (b) Comparison diagram of misalignment of beam shaping system with different axial distances designed by the two methods
Fig. 11. (a) Ray tracing simulation diagram of the off-axis two-mirror beam shaping system designed by the Single Virtual Surface method; (b) Ray tracing simulation diagram of the off-axis two-mirror beam shaping system designed by the VSI method; (c) Simulation diagram of the irradiance of the target surface of the off-axis two-mirror beam shaping system designed by the Single Virtual Surface method; (d) Simulation diagram of the irradiance of the target surface of the off-axis two-mirror beam shaping system designed by the VSI method
Fig. 12. Comparison diagram of misalignment of beam shaping system with different distances between optical axes designed by the two methods
Table 1. Simulation results of beam shaping systems with different beam amplification ratios designed by the two methods
View tableView in ArticleTable 1. Simulation results of beam shaping systems with different beam amplification ratios designed by the two methods
Beam amplification ratio Single Virtual Surface method Virtual Surface Iteration method Irradiance uniformity Energy efficiency Irradiance uniformity Energy efficiency 1 95.79% 99.804% 96.25% 99.804% 1.5 95.24% 99.809% 96.23% 99.81% 2 95.22% 96.619% 95.80% 99.821% 2.5 94.03% 92.951% 95.76% 99.817% 3 92.64% 90.859% 95.57% 99.798%
Table 2. Simulation results of beam shaping systems with different axial distances designed by the two methods
View tableView in ArticleTable 2. Simulation results of beam shaping systems with different axial distances designed by the two methods
Axial distance/mm Single Virtual Surface method Virtual Surface Iteration method Irradiance uniformity Energy efficiency Irradiance uniformity Energy efficiency 50 90.56% 92.201% 96.18% 99.801% 60 92.75% 97.541% 95.86% 99.794% 70 94.59% 99.772% 95.34% 99.788% 80 95.20% 99.780% 95.64% 99.826% 90 95.30% 99.820% 95.79% 99.823%
Tools
Get Citation
Copy Citation Text
Quanjin Zhu, Haotong Ma, Bingxu Chen, Yingqi Xing, Junjie Lin, Yi Tan. Design method of beam shaping system for double free-form surfaces based on Virtual Surface Iteration method[J]. Infrared and Laser Engineering, 2024, 53(2): 20230587
Paper Information
Category:
Received: Oct. 19, 2023
Accepted: --
Published Online: Mar. 27, 2024
The Author Email:
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20