Third Harmonic Generation of Optical Vortices Using Holography‐Based Gold‐Fork Microstructure
Third Harmonic Generation of Optical Vortices Using Holography‐Based Gold‐Fork Microstructure
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DOI：
10.1002/adom.201300496
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发表时间：
2014-04
影响因子：
9
通讯作者：
Guixin Li;Shu Mei Chen;Yuan Cai;Shuang Zhang;K. Cheah
中科院分区：
文献类型：
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作者：
Guixin Li;Shu Mei Chen;Yuan Cai;Shuang Zhang;K. Cheah
具有轨道角动量的光在宏观操纵、量子光学和光通信等领域找到了新的应用。使用光学超晶格和气体介质演示了非线性介质中轨道角动量的产生，例如二次谐波产生和高次谐波产生。在这里，通过将金叉微结构与具有强非线性的共轭聚合物薄膜相结合，产生具有轨道角动量的涡旋光束的二阶和三阶谐波。与之前报道的产生非线性光学涡旋的介质相比，这种方法在器件小型化方面带来了巨大的优势，并为实现片上非线性光学涡旋器件提供了一种有前景的策略。
Light with orbital angular momentum has found novel applications in macro‐manipulation, quantum optics, and optical communication, etc. The generation of orbital angular momentum in nonlinear media, such as second harmonic generation and high harmonic generation, is demonstrated using an optical superlattice and a gas medium. Here, by combining a gold‐fork microstructure with a conjugated polymer thin film with strong nonlinearity, both second‐ and third‐order harmonic generation of vortex beams with orbital angular momentum are created. Compared to the previously reported medium to generate nonlinear optical vortex, this approach brings great advantages in device miniaturization and provides a promising strategy for realizing on‐chip nonlinear optical vortex devices.