Twisted mass transport enabled by the angular momentum of light
Twisted mass transport enabled by the angular momentum of light
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DOI：
10.1117/1.jnp.14.010901
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发表时间：
2020-01
影响因子：
1.5
通讯作者：
T. Omatsu;K. Masuda;K. Miyamoto;K. Toyoda;N. Litchinitser;Y. Arita;K. Dholakia
中科院分区：
文献类型：
--
作者：
T. Omatsu;K. Masuda;K. Miyamoto;K. Toyoda;N. Litchinitser;Y. Arita;K. Dholakia
抽象的。光可以携带轨道角动量（AM）和自旋角动量。前者是其螺旋波前的结果，后者是其旋转横向电场的结果。有趣的是，光与物质与此类场的相互作用表明，光的轨道 AM 会导致一系列材料发生物理“扭曲”，包括金属、硅、偶氮聚合物，甚至液相树脂。这一过程可能会得到光的自旋 AM 的帮助，从而形成各种螺旋结构。光与物质的AM之间的交换不仅提供了纳米尺度上独特的螺旋结构，而且还提供了关于光与物质相互作用的全新基本现象。这将促进先进光子器件的未来发展，包括用于高灵敏度探测器的超材料以及手性化学复合材料的反应。在这里，我们重点关注光的 AM 和偶氮聚合物之间的相互作用，它们表现出一些观察到的最多样化的结构和现象。这些研究产生了偶氮聚合物中的螺旋表面浮雕结构，并将利用携带光学增材制造的光场的下一代应用。
Abstract. Light may carry both orbital angular momentum (AM) and spin AM. The former is a consequence of its helical wavefront, and the latter is a result of its rotating transverse electric field. Intriguingly, the light–matter interaction with such fields shows that the orbital AM of light causes a physical “twist” in a range of materials, including metal, silicon, azopolymer, and even liquid-phase resin. This process may be aided by the light’s spin AM, resulting in the formation of various helical structures. The exchange between the AM of light and matter offers not only unique helical structures at the nanoscale but also entirely novel fundamental phenomena with regard to the light–matter interaction. This will lead to the future development of advanced photonics devices, including metamaterials for highly sensitive detectors as well as reactions for chiral chemical composites. Here, we focus on interactions between the AM of light and azopolymers, which exhibit some of the most diverse structures and phenomena observed. These studies result in helical surface relief structures in azopolymers and will leverage next-generation applications with light fields carrying optical AM.