Liangliang Yang, Luo Zhang, Haihong Zhu, Jie Yin, Linda Ke, Xiaoyan Zeng. Influences of Lens Distance and Tilt Angle Between Beam Expanders on Laser Focusing Characteristics[J]. Laser & Optoelectronics Progress, 2018, 55(4): 041401
- Laser & Optoelectronics Progress
- Vol. 55, Issue 4, 041401 (2018)
Fig. 1. Optical system diagram for laser processing
Fig. 2. Beam expanders commonly used in laser processing. (a) Kepler system; (b) Galileo system
Fig. 3. Schematic of optical system with sequence mode
Fig. 4. Diagram of optical system with non-sequence mode
Fig. 5. Relationship between defocusing amount and distance between beam expanders
Fig. 6. Schematic of tilt angle of beam expander
Fig. 7. Relationship among focal length, defocusing amount and tilt angle of beam expander
Fig. 8. Relationship among peak power, spot diameter and distance between beam expanders
Fig. 9. Relationship among peak power, spot diameter and tilt angle of beam expander
Fig. 10. (a) Distribution of spot energy at different lens distances; (b) distribution of spot energy at different tilt angles; (c) relationship between spot center position and tilt angle of beam expander
Fig. 11. (a) Schematic of experimental setup for measuring focus position; (b) schematic of measuring method; (c) relationship between defocusing amount and lens distance measured in experiment
Fig. 12. Schematic of experimental setup for measuring spot energy distribution
Fig. 13. Distributions of spot energy under different lens distances. (a) Δd=1.0 mm; (b) Δd=0.2 mm; (c) Δd=-0.2 mm; (d) Δd=-1.0 mm
|
Table 1. Parameters of optical system with sequence mode
|
Table 2. Parameters of optical system with non-sequential mode
|
Table 3. Parameters of optical system with non-sequential mode when lens tilt angle is changed
| ||||||||||||||||
Table 4. Spot energy distributions in initial position (after filtering)
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20