A spiral-like curve with an adjustable opening generated by a modified helico-conical beam
A spiral-like curve with an adjustable opening generated by a modified helico-conical beam
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由改进的螺旋锥形梁产生的具有可调节开口的螺旋状曲线
DOI:
10.1016/j.optcom.2019.124824
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发表时间:
2020-03
影响因子:
2.4
通讯作者:
Cheng Shubo
中科院分区:
文献类型:
--
作者:
Xia Tian;Tao Shaohua;Cheng Shubo
A modified helico-conical beam (MHCB) is proposed to generate a spiral-like curve with an adjustable opening at the focal plane of a lens. Moreover, the opening of a spiral-like curve can be adjustable finely, which firstly increases quickly and then increases slowly with the increasement of the fractionn. For the MHCB, there is not also stray light around the opening at the focal plane. In addition, the intensity profile for the MHCB approaching the focal plane of the lens along the optic axis rotates. Furthermore, it is also proved in the experiments that the spiral-like beam with the opening can be used to transport particles. The generating method of the MHCB is illustrated. In addition, we also prove numerically and experimentally that the MHCB can produce a spiral-like intensity distribution. The proposed beam can be applied to induce transportation of particles, and collect multiple particles in the center of the spiral-like curve, and sort the particles into different positions.
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DOI:
10.1119/1.2768695
发表时间:
2007-08
期刊:
The Physics Teacher
影响因子:
--
作者:
E. Huggins
通讯作者:
E. Huggins
影响因子:
3.8
作者:
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影响因子:
3.4
作者:
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影响因子:
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作者:
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通讯作者:
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