光学学报, 2019, 39 (10): 1026001, 网络出版: 2019-10-09
可调谐的非傍轴自加速光束 
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Tunable Non-Paraxial Accelerating Beams
图 & 表
图 1. 自加速光束产生原理。 (a) 谱相位调制产生自加速光束示意图;(b) 凸轨迹定义
Fig. 1. Mechanism of generating accelerating beams. (a) Schematic for generating accelerating beams by spectral phase modulation; (b) definition of convex trajectory
图 2. 可调谐自加速光束的一维光场演化图。(a) 对数轨迹,a 1=10,a 2=0. 6; (b) 4次幂轨迹,b 1=10-7,b 2=4; (c) 正弦轨迹,c 1=80,c 2=160
Fig. 2. One-dimensional optical field evolutions of tunable accelerating beams. (a) Logarithmic trajectory, a 1=10, a 2=0.6; (b) fourth-power trajectory, b 1=10-7, b 2=4; (c) sinusoidal trajectory, c 1=80, c 2=160
图 3. 二维正弦自加速光束。 (a)二维正弦自加速光束传输演化切片图;(b) sx -ξ 平面理论传播轨迹图。图中圆圈代表主瓣位置,曲线和虚线表示理想传输正弦曲线
Fig. 3. Two-dimensional sinusoidal accelerating beams. (a) Propagation evolution slices of two-dimensional sinusoidal accelerating beams; (b) theoretical propagation trajectory in sx -ξ plane. Circles represent positions of main lobe, and solid and dotted curves denote ideal propagation sinusoidal trajectories in Fig. 3
图 5. 圆轨迹自加速光束。(a) 一维光场演化图,右上角的插图为焦散线形成示意图,实曲线代表圆轨迹自加速光束,不带箭头的实线为光线簇,虚线表示透镜后焦平面;(b1)~(b3) ξ 为10、35和50处的模拟光强分布;(c1)~(c3) z 为10,15,50 cm处的实验光强分布
Fig. 5. Accelerating beam with circular trajectory. (a) One-dimensional optical field evolution and inset in upper right corner is schematic of generating caustics, where solid curve represents accelerating beam with circular trajectory, solid lines without arrows represent cluster of rays, and dotted line represents rear focal plane of lens; (b1)-(b3) numerical intensity distributions at different distances: ξ =10,35,50; (c1)-(c3) experimental intensity distributions at different distan
兰燕平, 赖松陶, 施逸乐, 任志君, 钱义先. 可调谐的非傍轴自加速光束[J]. 光学学报, 2019, 39(10): 1026001. Yanping Lan, Songtao Lai, Yile Shi, Zhijun Ren, Yixian Qian. Tunable Non-Paraxial Accelerating Beams[J]. Acta Optica Sinica, 2019, 39(10): 1026001.
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