Generation of second harmonic Bessel beams through hybrid meta-axicons
Generation of second harmonic Bessel beams through hybrid meta-axicons
复制标题
通过混合元轴棱镜生成二次谐波贝塞尔光束
DOI：
10.1364/oe.384699
复制
发表时间：
2020-02-03
期刊：
影响因子：
3.8
通讯作者：
Lu, Peixiang
中科院分区：
文献类型：
--
作者：
Long, Hua;Niu, Le;Lu, Peixiang
由于贝塞尔光束具有无衍射和自重构的特性，在许多领域有着巨大的应用潜力。本文首次提出了一种非线性准轴棱锥产生二次谐波贝塞尔光束。非线性亚轴棱锥是基于Au/WS 2杂化纳米结构。在810 nm飞秒激光激发下，产生了零阶和一阶二次谐波贝塞尔光束。此外，还从理论和实验上分析了准轴棱锥的二次谐波产生效率、无衍射距离和半高宽等性能。实验结果与理论预测相一致，这将使相关的非线性光学器件小型化，产生非线性贝塞尔光束，在非线性光学操纵、成像和牵引光束等方面具有潜在的应用价值。(C)根据OSA开放获取出版协议的条款，2020年美国光学学会
Bessel beams are of great potential applications in many fields due to their non-diffraction and self-reconstruction. Here we firstly present a type of nonlinear meta-axicon to generate second harmonic Bessel beams. The nonlinear meta-axicons are based on Au/WS2 hybrid nanostructures. Zero-order and first-order Bessel beams of second harmonic are generated under exciting of 810 nm femtosecond laser. In addition, the performances of the nonlinear meta-axicons, such as the second harmonic generation (SHG) efficiency, non-diffracting distance and full width at half maximum (FWHM) are analyzed theoretically and experimentally. The experimental results are consistent with the predicted, which can enable miniaturized nonlinear optical devices related to generate nonlinear Bessel beams, having potential application in nonlinear optical manipulation, imaging and tractor beams. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement