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| 高阶轨道角动量光涡旋晶格的产生及Talbot效应 |
| Generation and Talbot effect of optical vortex lattices with high orbital angular momentum |
| 投稿时间：2024-11-05 |
| DOI：10.3969/j.issn.1005-5630.202411050099 |
| 中文关键词: 光涡旋晶格 高阶光涡旋晶格 拓扑电荷 Talbot效应 |
| 英文关键词:optical vortex lattices high-order optical vortex lattices topological charge Talbot effect |
| 基金项目:河南省自然科学基金(242300420273) |
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| 摘要点击次数: 107 |
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| 中文摘要: |
| 光涡旋晶格（optical vortex lattices，OVL）因其在强度和相位结构方面的特性而受到越来越多的关注。干涉是生成OVL的常用方法。然而，OVL中所携带的拓扑电荷（topological charge，TC）通常较小且固定，难以调制，从而限制了其适用性。使用相位乘法生成一个高阶光涡旋晶格，以方便对TC进行任意调制。生成的高阶光涡旋晶格在传输过程中表现出Talbot效应，并在特定的分数Talbot距离处转变为超蜂窝晶格和六边形晶格。这为超蜂窝晶格和六边形晶格的生成提供了一种新方法。此外，OVL中携带的轨道角动量为其在光学显微操作中的应用提供了广阔前景。研究结果不仅增进了对Talbot效应的认识，还拓宽了OVL的实际应用范围。 |
| 英文摘要: |
| Optical vortex lattices (OVL) are gaining increased research attention owing to their unique features related to intensity and phase structure. Interference is a common method for generating an OVL. However, the topological charge (TC) carried in OVL is usually small and fixed and cannot be modulated, limiting its applications in many fields. This study applied phase multiplication to generate a high-order OVL to facilitate the arbitrary modulation of the TC. The generated high-order OVL exhibited the Talbot effect during transmission, and it transformed into a super-honeycomb lattice with specific fractional Talbot lengths. In addition, an orbital angular momentum was developed in the OVL. This has broad application prospects in optical micromanipulation. Furthermore, a method for generating super-honeycomb lattices was proposed. The findings of this study not only enhance understanding of the Talbot effect but also broaden the practical applications of OVL. |
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