Fractional orbital angular momentum conversion in second-harmonic generation with an asymmetric perfect vortex beam

Dai Kunjian; Miller J. Keith; Li Wenzhe; Watkins Richard J.; Johnson Eric G.

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Fractional orbital angular momentum conversion in second-harmonic generation with an asymmetric perfect vortex beam

机译：具有不对称完美涡旋光束的二次谐波产生的分数轨道角动量转换

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This Letter demonstrates the nonlinear conversion of asymmetric perfect vortex (APV) beams with fractional orbital angular momentum (OAM). By controlling the amplitude and phase of the fundamental light field, we create APVs whose global OAM demonstrates a one-to-one correspondence of the charge numbers for fractional OAM values. The results show that the OAM of the second-harmonic generation fields follow the OAM conservation law. The nonlinear interactions of multiple OAM beams with the APVs are also investigated as they relate to the nonlinear frequency conversion and are shown to exhibit unique frequencies as a result of theDoppler frequency tagged OAM values. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.

机译：这封信演示了具有分数轨道角动量（OAM）的非对称完美涡旋（APV）光束的非线性转换。通过控制基本光场的振幅和相位，我们创建了APV，其全局OAM显示分数OAM值的电荷数的一对一对应关系。结果表明，二次谐波场的OAM遵循OAM守恒定律。此外，还研究了多个OAM波束与APV之间的非线性相互作用，因为它们与非线性频率转换有关，并且由于多普勒频率标记的OAM值显示出独特的频率。（c）根据OSA开放获取出版协议的条款，美国2021光学学会。

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《Optics Letters》 |2021年第14期|共4页
作者
Dai Kunjian; Miller J. Keith; Li Wenzhe; Watkins Richard J.; Johnson Eric G.;
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Clemson Univ Holcombe Dept Elect &

Comp Engn Microphoton Lab Clemson SC 29634 USA;

Clemson Univ Holcombe Dept Elect &

Comp Engn Microphoton Lab Clemson SC 29634 USA;

Clemson Univ Holcombe Dept Elect &

Comp Engn Microphoton Lab Clemson SC 29634 USA;

Clemson Univ Holcombe Dept Elect &

Comp Engn Microphoton Lab Clemson SC 29634 USA;

Clemson Univ Holcombe Dept Elect &

Comp Engn Microphoton Lab Clemson SC 29634 USA;

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正文语种 eng
中图分类计量学;光学;
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7. Orbital Angular Momentum (OAM) Carried by Asymmetric Vortex Beams for Wireless Communications: Theory and Experiment [C] . Baoluo Yan, Zehui Lu, Jinyao Hu, Conference on Lasers and Electro-Optics Pacific Rim . 2020

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Fractional orbital angular momentum conversion in second-harmonic generation with an asymmetric perfect vortex beam

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