Creation of a multi-segmented optical needle with prescribed length and spacing using the radiation pattern from a sectional-uniform line source.
Creation of a multi-segmented optical needle with prescribed length and spacing using the radiation pattern from a sectional-uniform line source.
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使用来自截面均匀线源的辐射图案创建具有规定长度和间距的多段光针
DOI：
10.1038/s41598-017-11501-9
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发表时间：
2017-09-06
影响因子：
4.6
通讯作者：
Zhan Q
中科院分区：
文献类型：
--
作者：
Yu Y;Huang H;Zhou M;Zhan Q
本文提出了一种产生多段光针的方法，这种光针具有强的纵向偏振场，沿光轴沿着均匀的强度，横向尺寸约为0.36λ。光学针中的每个段的长度和相邻段之间的间距是可控制的，通过将辐射图案从截面均匀的线源天线反转并聚焦到4Pi聚焦系统的焦点体积。通过求解逆问题，可以获得所需的光瞳面入射场分布，以创建多段光针。数值算例表明，该方法可以形成焦深可变、间距可调、横向宽度窄、强度均匀、纵向偏振纯度高的多段光针。每个针段的长度近似等于对应的分段均匀线源的长度。多段光学针可用于诸如多粒子加速、多粒子捕获和操纵、激光加工和激光材料处理的应用中。
This paper presents a method to generate a multi-segmented optical needle with a strong longitudinally polarized field, uniform intensity along the optical axis, and a transverse size (~0.36λ). The length of each segment in the optical needle and the spacing between adjacent segments are controllable by reversing and focusing the radiation pattern from a sectional-uniform line source antenna to the focal volume of a 4Pi focusing system. By solving the inverse problem, we can obtain the required incident field distribution at the pupil plane to create the multi-segmented optical needle. Numerical examples demonstrate that a multi-segmented optical needle with variable focal depth, adjustable interval, narrow lateral width, homogeneous intensity, and high longitudinal polarization purity can be formed using the proposed approach. The length of each needle segment is approximately equal to the length of the corresponding sectional uniform line source. The multi-segmented optical needle may be employed in applications such as multi-particle acceleration, multi-particle trapping and manipulation, laser machining, and laser material processing.
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影响因子：
3.8
作者：
Han, Wei;Yang, Yanfang;Zhan, Qiwen
通讯作者：
Zhan, Qiwen
影响因子：
8.6
作者：
Dorn, R;Quabis, S;Leuchs, G
通讯作者：
Leuchs, G
通过介电界面聚焦混合偏振矢量光束生成超长光针
影响因子：
3.6
作者：
Hu, Kelei;Chen, Ziyang;Pu, Jixiong
通讯作者：
Pu, Jixiong
影响因子：
4
作者：
Payeur, S.;Fourmaux, S.;Kieffer, J. C.
通讯作者：
Kieffer, J. C.
影响因子：
3.8
作者：
Youngworth, KS;Brown, TG
通讯作者：
Brown, TG