Mingyong Hu, Zhiwei Feng, Errong Fan, Qi Zhao, Mingjie Li. Design of High Power Laser Focus System over Variable Long Distance[J]. Laser & Optoelectronics Progress, 2018, 55(6): 062204
- Laser & Optoelectronics Progress
- Vol. 55, Issue 6, 062204 (2018)
Fig. 1. Structural diagram of Cassegrain system
Fig. 2. Structural diagram of optical system
Fig. 3. Cassegrain system. (a) Spot diagram; (b) wavefront map
Fig. 4. (a) Relationship between object distance and system focal length; (b) relationship between object distance and focusing spot diameter; (c) relationship between system focal length and focusing spot diameter
Fig. 5. Full field spot diagrams under different object distances. (a) 500 m; (b) 1000 m; (c) 2000 m; (d) 3000 m; (e) 4000 m; (f) 5000 m
Fig. 6. MTF under different object distances. (a) 500 m; (b) 1000 m; (c) 2000 m; (d) 3000 m; (e) 4000 m; (f) 5000 m
Fig. 7. Practical system. (a) Front view; (b) back view
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Table 1. Specifications of size distribution of focusing spot
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Table 2. System parameters when object distance is 5000 m
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Table 3. Relationship between object distance and focusing spot diameter
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