He Chen, Yuting Sun, Wangshu Tan, Siying Chen, Yinchao Zhang, Pan Guo, Lifu Wang, Guangxiang Jiang, Xin Li. Optical Design of Multi-Stage Confocal Parabolic Reflection Laser Beam Expander[J]. Acta Optica Sinica, 2022, 42(13): 1322001

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- Acta Optica Sinica
- Vol. 42, Issue 13, 1322001 (2022)

Fig. 1. Principle diagram of confocal parabolic reflection beam expander

Fig. 2. Beam expansion principle of two-stage beam expander 1

Fig. 3. Beam expansion principle of two-stage beam expander 2

Fig. 4. 3D layouts of beam expanders. (a) Single-group beam expander; (b) two-stage beam expander 1; (c) two-stage beam expander 2

Fig. 5. Illumination distributions of image plane of beam expanders. (a) Single-group beam expander; (b) two-stage beam expander 1; (c) two-stage beam expander 2

Fig. 6. RMS wavefront errors of system. (a) Single-group beam expander; (b) two-stage beam expander 1; (c) two-stage beam expander 2

Fig. 7. Field curves of beam expanders

Fig. 8. Distortion of beam expanders
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Table 1. Design indexes of beam expanders
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Table 2. Dimensions of three beam expanders
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Table 3. Parameters of three beam expanders
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Table 4. Tolerance parameters of beam expanders

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