利用合成维度对不同波向的光线进行路由。

IF 1.4 3区 物理与天体物理 Q3 OPTICS Journal of The Optical Society of America A-optics Image Science and Vision Pub Date : 2024-06-01 DOI:10.1364/JOSAA.519506
Xin Lyu, Kai Bai, Meng Xiao
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引用次数: 0

摘要

最近,合成维度在研究高维拓扑物理和为操纵光提供额外自由度方面引起了广泛关注。研究表明,合成维度有助于将不同频率的光集中在不同位置。在这里,我们展示了合成维度还能将来自不同入射方向的光进行路由。我们的系统由两个不同的光子晶体形成的界面组成。通过移动界面右侧光子晶体的终端位置,引入合成维度ξ。我们确定了 ξ 和界面状态之间的对应关系,这样就可以收集来自特定方向的入射光。因此,通过设计一个具有适当ξ分布的界面,就能将来自不同方向的入射光路由。传统上,这一目标是通过使用凸透镜的标准 4f 光学系统实现的,而我们的方法提供了在光子晶体的几个晶格位点内实现这一功能的可能性。这种方法减小了系统的尺寸,使其更易于集成。据我们所知,我们的工作为路由不同动量的光提供了一个新方向,并可能有助于激光雷达等应用。
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Routing light with different wavevectors using synthetic dimensions.

Synthetic dimensions have drawn intense recent attention in investigating higher-dimensional topological physics and offering additional degrees of freedom for manipulating light. It has been demonstrated that synthetic dimensions can help to concentrate light with different frequencies at different locations. Here, we show that synthetic dimensions can also route light from different incident directions. Our system consists of an interface formed by two different photonic crystals. A synthetic dimension ξ is introduced by shifting the termination position of the photonic crystal on the right-hand side of the interface. We identify a correspondence between ξ and the interface state such that light incident from a specific direction can be collected. Thus, routing incident light from different directions is achieved by designing an interface with a proper distribution of ξ. Traditionally, this goal is achieved with a standard 4f optical system using a convex lens, and our approach offers the possibility for such a capability within a few lattice sites of photonic crystals. Such an approach reduces the size of the system, making it easier for integration. Our work provides, to our knowledge, a new direction for routing light with different momentums and possibly contributes to applications such as lidar.

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来源期刊
CiteScore
3.40
自引率
10.50%
发文量
417
审稿时长
3 months
期刊介绍: The Journal of the Optical Society of America A (JOSA A) is devoted to developments in any field of classical optics, image science, and vision. JOSA A includes original peer-reviewed papers on such topics as: * Atmospheric optics * Clinical vision * Coherence and Statistical Optics * Color * Diffraction and gratings * Image processing * Machine vision * Physiological optics * Polarization * Scattering * Signal processing * Thin films * Visual optics Also: j opt soc am a.
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