基于环形光束整形的衍射光学元件的精确设计
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摘要
提出一种改进的Gerchberg-Saxton(G-S)算法,实现了基于环形光束的衍射光学元件的精确设计。所提算法可以确保输出平面上有小的采样间隔,起到了抑制散斑的作用;与未采用散斑抑制的常规的改进G-S算法相比,所提算法得到了更高性能的均匀光斑;仿真结果和实验结果一致。
An improved Gerchberg-Saxton(G-S) algorithm is proposed to realize the accurate design of the diffractive optical elements based on annular beams. This algorithm ensures a small sampling interval on the output plane and suppresses speckle. Compared with the design results of the conventional improved G-S algorithm without speckle suppression, a uniform spot with better performance is obtained by the proposed algorithm. The simulated results are in agreement with the experimental results.
An improved Gerchberg-Saxton(G-S) algorithm is proposed to realize the accurate design of the diffractive optical elements based on annular beams. This algorithm ensures a small sampling interval on the output plane and suppresses speckle. Compared with the design results of the conventional improved G-S algorithm without speckle suppression, a uniform spot with better performance is obtained by the proposed algorithm. The simulated results are in agreement with the experimental results.
引文
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[8] Yan H, Zhang W, Ye Y D, et al. Design of diffractive optical elements for filled-aperture coherent beam combining[J]. High Power Laser and Particle Beams, 2015, 27(6): 061002. 颜宏, 张卫, 叶一东, 等. 用于共孔径相干合成的衍射光学元件设计[J]. 强激光与粒子束, 2015, 27(6): 061002.
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[10] Voicu L I, Rabadi W A, Myler H R. Object support reconstruction from the support of its autocorrelation using multiresolution genetic algorithms[J]. Optical Engineering, 1997, 36(10): 2820-2827.
[11] Qu W D. Beam shaping with diffractive optical elements and its applications[D]. Beijing: Tsinghua University, 2016: 61-73. 曲卫东. 衍射光学光束整形技术研究与应用[D]. 北京: 清华大学, 2016: 61-73.
[12] Sun M J, Yu K L, Meng Z K, et al. Speckle suppression method with vibrating light pipe[J]. Chinese Journal of Lasers, 2013, 40(10): 1002013. 孙鸣捷, 于康龙, 孟照魁, 等. 一种采用振动混光棒的散斑抑制技术[J]. 中国激光, 2013, 40(10): 1002013.
[13] Redding B, Choma M A, Cao H. Speckle-free laser imaging using random laser illumination[J]. Nature Photonics, 2012, 6(6): 355-359.
[2] Liu X Q, Xue C X. Design of diffractive optical elements based on axicon and its light analysis[J]. Laser & Optoelectronics Progress, 2018, 55(4): 040501. 刘晓庆, 薛常喜. 基于轴棱锥的衍射光学元件设计及其光场分析[J]. 激光与光电子学进展, 2018, 55(4): 040501.
[3] Wu C, Gu H R, Zhou Z H, et al. Design of diffractive optical elements for subdiffraction spot arrays with high light efficiency[J]. Applied Optics, 2017, 56(31): 8816-8821.
[4] Gerchberg R W, Saxton W O. A practical algorithm for the determination of phase from image and diffraction plan picture[J]. Optik, 1972, 35(2): 237-246.
[5] Wang D. Adaptive-weight iterative algorithm for flat-top laser beam shaping[J]. Optical Engineering, 2012, 51(7): 074301.
[6] Yan S H. Design diffractive optical elements with asymmetric structures using the two-dimensional Yang-Gu algorithm[J]. Optical Technique, 2004, 30(6): 690-692. 颜树华. 利用二维杨-顾算法设计非对称结构衍射光学元件[J]. 光学技术, 2004, 30(6): 690-692.
[7] Tan X, Gu B Y, Yang G Z, et al. Diffractive phase elements for beam shaping: a new design method[J]. Applied Optics, 1995, 34(8): 1314-1320.
[8] Yan H, Zhang W, Ye Y D, et al. Design of diffractive optical elements for filled-aperture coherent beam combining[J]. High Power Laser and Particle Beams, 2015, 27(6): 061002. 颜宏, 张卫, 叶一东, 等. 用于共孔径相干合成的衍射光学元件设计[J]. 强激光与粒子束, 2015, 27(6): 061002.
[9] Kirkpatrick S, Gelatt C D, Vecchi M P. Optimization by simulated annealing[J]. Science, 1983, 220(4598): 671-680.
[10] Voicu L I, Rabadi W A, Myler H R. Object support reconstruction from the support of its autocorrelation using multiresolution genetic algorithms[J]. Optical Engineering, 1997, 36(10): 2820-2827.
[11] Qu W D. Beam shaping with diffractive optical elements and its applications[D]. Beijing: Tsinghua University, 2016: 61-73. 曲卫东. 衍射光学光束整形技术研究与应用[D]. 北京: 清华大学, 2016: 61-73.
[12] Sun M J, Yu K L, Meng Z K, et al. Speckle suppression method with vibrating light pipe[J]. Chinese Journal of Lasers, 2013, 40(10): 1002013. 孙鸣捷, 于康龙, 孟照魁, 等. 一种采用振动混光棒的散斑抑制技术[J]. 中国激光, 2013, 40(10): 1002013.
[13] Redding B, Choma M A, Cao H. Speckle-free laser imaging using random laser illumination[J]. Nature Photonics, 2012, 6(6): 355-359.