Wen-jing LIU, Hui PANG, A-xiu CAO, Li-fang SHI, Yong-qi FU, Qi-ling DENG. Design and Experiments of Annular Beam Shaping Device with Low Speckle Noise[J]. Acta Photonica Sinica, 2020, 49(2): 0222001
- Acta Photonica Sinica
- Vol. 49, Issue 2, 0222001 (2020)
Fig. 1. The determination ofinitial phase
Fig. 2. The influence of parameter a and b on the output beam
Fig. 3. The flowchart of the algorithm
Fig. 4. Diffraction efficiency and uniformity error
Fig. 5. The simulation results of the annular flat-top beam
Fig. 6. Experimental setup and the intensity distribution of Gaussian beam
Fig. 7. The experimental results of proposed method
Fig. 8. The experimental results of traditional GS algorithm
Fig. 9. Effect of Gaussian spot with different waist radius on output beam
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