中国激光, 2020, 47 (9): 0905003, 网络出版: 2020-09-16
基于涡旋圆偏振光干涉的偏振快速旋转束匀滑方案 
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Rapid Polarization Rotation Smoothing Scheme Based on Interference of Circularly Polarized Vortex Beamlets
图 & 表
图 1. 基于涡旋圆偏振光干涉的偏振旋转束匀滑方案示意图
Fig. 1. Schematic of polarization rotation smoothing scheme based on interference of circularly polarized beamlets
图 3. 不与CPP联用时不同时刻的焦面光强分布
Fig. 3. Intensity distributions in focal plane without CPP at different moments
图 4. 焦面光场的偏振特性。 (a) x、y方向光强随时间的变化曲线,右上角插图为仅用PR方案的结果,主图为采用PR+2D-SSD方案的结果;(b) DOP和S3/S0值随时间的变化曲线
Fig. 4. Polarization characteristics of field in focal plane. (a) Variations of intensities in x and y directions with time, where result with PR+2D-SSD scheme is shown in main plot and that with PR only is shown in inset at upper-right corner; (b) variations of DOP and value of S3/S0 with time
图 5. 焦面光强分布及其评价参数曲线。 (a)仅用PR方案时所得的焦斑;(b)采用PR+2D-SSD时所得的焦斑;(c) Co曲线;(d) FOPAI曲线
Fig. 5. Intensity distributions in focal plane and evaluation parameter curves. (a) Focal spot with PR only; (b) focal spot with PR+2D-SSD; (c) Co curve; (d) FOPAI curve
图 6. 在PR+2D-SSD方案中,不同波长组合下焦面光强和S3/S0随时间的变化。 (a) λ1=λ3=λ2=λ4=351 nm,焦面光强,右上角插图为仅用PR方案的结果; (b) λ1=λ3 =351 nm,λ2=λ4=351.2 nm,焦面光强,右上角插图为仅用PR方案的结果; (c) λ1=λ3=351 nm,λ2=λ4=351.6 nm,焦面光强,右上角插图为仅用PR方案的结果;(d) λ1=λ3=351 nm, Fig. 6. Variations of intensity in focal plane and S3/S0 with time under different wavelength combinations in PR+2D-SSD scheme. (a) Intensities in focal plane under λ1=λ3=λ2=λ4=351 nm, where result with PR only is shown in inset at upper-right corner; (b) intensities in focal plane under λ1=λ3=351 nm and λ2=λ4=351.2 nm, where
Fig. 6. Variations of intensity in focal plane and S3/S0 with time under different wavelength combinations in PR+2D-SSD scheme. (a) Intensities in focal plane under λ1=λ3=λ2=λ4=351 nm, where result with PR only is shown in inset at upper-right corner; (b) intensities in focal plane under λ1=λ3=351 nm and λ2=λ4=351.2 nm, where
图 7. 不同波长组合下的Co曲线。(a)仅采用PR方案;(b)采用PR+2D-SSD方案
Fig. 7. Variations of Co with time under different wavelength combinations; (a) PR only; (b) PR+2D-SSD
图 8. 在PR+2D-SSD方案中,不同拓扑荷数下焦面光强、S3/S0、Co随时间的变化。 (a) l=±1,焦面光强,右上角插图为仅用PR方案的结果; (b) l=±2,焦面光强,右上角插图为仅用PR方案的结果; (c) l=±3,焦面光强,右上角插图为仅用PR方案的结果;(d) S3/S0,右上角插图为仅用PR方案的结果;(e) Co
Fig. 8. Variations of intensity in focal plane, S3/S0, and Co with time under different topological charges in PR+2D-SSD scheme. (a) Intensities in focal plane under l=±1, where result with PR only is shown in inset at upper-right corner; (b) intensities in focal plane under l=±2, where result with PR only is shown in inset at upper-right corner; (c) intensities in focal plane under l=±3, where result with PR only is shown in ins
图 9. 在PR+2D-SSD方案中,不同条件下的焦面光强、S3/S0、Co随时间的变化。(a)无振幅调制且无相位畸变,焦面光强,右上角插图为仅用PR方案的结果;(b)有振幅调制但无相位畸变,焦面光强,右上角插图为仅用PR方案的结果;(c)有振幅调制和相位畸变且P'=λ,焦面光强,右上角插图为仅用PR方案的结果;(d)有振幅调制和相位畸变且P'=2λ,焦面光强,右上角插图为仅用PR方案的结果;(e) S3/S0;(f) Co
Fig. 9. Variations of intensity in focal plane, S3/S0, and Co with time under different conditions in PR+2D-SSD scheme. (a) Intensities in focal plane without phase distortion and amplitude modulation, where result with PR only is shown in inset at upper-right corner; (b) intensities in focal plane with amplitude modulation and without phase distortion, where result with PR only is shown in inset at upper-right corner; (c) intensities in focal plane
图 10. 在PR+2D-SSD方案中不同器件误差对系统的影响。(a) θ;(b) n;(c) Emax;(d)当θ=5°,n=10,Emax =20 nm时焦面光强随时间的变化曲线,右上角插图为仅用PR方案的结果
Fig. 10. Influence of device error on system in PR+2D-SSD scheme. (a) θ; (b) n; (c) Emax; (d) variation of intensity in focal plane with time when θ=5°, n=10, and Emax =20 nm, where result with PR only is shown in inset at upper-right corner
黄媛, 张寅瑞, 钟哲强, 张彬, 孙年春. 基于涡旋圆偏振光干涉的偏振快速旋转束匀滑方案[J]. 中国激光, 2020, 47(9): 0905003. Huang Yuan, Zhang Yinrui, Zhong Zheqiang, Zhang Bin, Sun Nianchun. Rapid Polarization Rotation Smoothing Scheme Based on Interference of Circularly Polarized Vortex Beamlets[J]. Chinese Journal of Lasers, 2020, 47(9): 0905003.
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