光学学报, 2020, 40 (1): 0111016, 网络出版: 2020-01-06
激光通过不同厚度的强散射介质的聚焦 
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Focusing of Laser Through Strong Scattering Media with Different Thicknesses
图 & 表
图 1. 调控入射激光波前实现透过散射介质的聚焦示意图。(a)平面波透过散射介质后形成随机散斑;(b)调制后的入射光透过散射介质后在特定位置形成的聚焦光斑
Fig. 1. Schematics of focusing of incident laser after passing through scattering medium by modulating wavefront. (a) Random speckle formed by plane wave passing through scattering medium; (b) focal spot formed at specific position by modulated incident laser passing through scattering medium
图 2. 连续序列算法逐个单元调制相位的流程图。M表示正在调制的单元格,O表示相位未调制的单元格,B表示已经优化后的单元格
Fig. 2. Flow chart of unit phase modulation using continuous sequential algorithm. M represents segment under modulating, O represents segment without phase modulation, and B represents segment after optimization
图 5. 未调制激光光束经过不同厚度的散射片样品形成的散斑图像。(a) 50 μm; (b) 100 μm; (c) 150 μm; (d) 200 μm; (e) 250 μm
Fig. 5. Images of random speckles formed by unmodulated incident laser passing through scattering media with different thicknesses. (a) 50 μm; (b) 100 μm; (c) 150 μm; (d) 200 μm; (e) 250 μm
图 6. 经相位调制的激光光束经过不同厚度的散射片样品形成聚焦光斑示意图。(a) 50 μm; (b) 100 μm; (c) 150 μm; (d) 200 μm; (e) 250 μm
Fig. 6. Focused spots produced by phase-modulated laser passing through scattering media with different thicknesses. (a) 50 μm; (b) 100 μm; (c) 150 μm; (d) 200 μm; (e) 250 μm
图 7. 获得对应图6 (a)~(e)的聚焦,需要加载在入射激光的波前相位图。(a) 50 μm; (b) 100 μm; (c) 150 μm; (d) 200 μm; (e) 250 μm
Fig. 7. Phase patterns of incident laser wavefront used for generating focal spots which are shown in Fig. 6 (a)-(e). (a) 50 μm; (b) 100 μm; (c) 150 μm; (d) 200 μm; (e) 250 μm
李琼瑶, 扎西巴毛, 陈子阳, 蒲继雄. 激光通过不同厚度的强散射介质的聚焦[J]. 光学学报, 2020, 40(1): 0111016. Qiongyao Li, Bamao Zhaxi, Ziyang Chen, Jixiong Pu. Focusing of Laser Through Strong Scattering Media with Different Thicknesses[J]. Acta Optica Sinica, 2020, 40(1): 0111016.
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