Zhangwei Jiang, Yan Yan, Yang Li, Yunfeng Bi. Wide-Range and High-Precision Microscopic Focusing System for Laser-Induced Breakdown Spectroscopy[J]. Acta Optica Sinica, 2018, 38(12): 1215004
- Acta Optica Sinica
- Vol. 38, Issue 12, 1215004 (2018)
Fig. 1. Diagram of automatic microscopic focusing system for LIBS detection
Fig. 2. Imaging of two defocus states
Fig. 3. Incomplete spot imaging
Fig. 4. Complete spot imaging
Fig. 5. Light intensity distribution maps
Fig. 6. Relationship between the defocus distance and the two-color spot center distance
Fig. 7. Physical imaging maps
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Table 1. Relationship between the defocus distance and the two-color spot center distance
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Table 2. Standard deviation of image pixel brightness
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