全片可重构生成标量和矢量轨道角动量光束

IF 20.6 Q1 OPTICS
Weike Zhao, Xiaolin Yi, Jieshan Huang, Ruoran Liu, Jianwei Wang, Yaocheng Shi, Yungui Ma, Andrew Forbes, Daoxin Dai
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引用次数: 0

摘要

携带角动量的结构光,如自旋角动量(SAM)和轨道角动量(OAM),已经成为新科学和应用的核心,推动了对紧凑片上光源的需求。虽然已经展示了许多静态片上解决方案,以及片上自由空间模式的源,但到目前为止,还没有一种架构可以在所有角动量状态和所有片上完全可重构。在这里,我们报告了第一个用于创建标量和矢量角动量光束的全片结构光发生器,通过带有硅模多路复用器(硅芯片)的绝缘体上硅(SOI)芯片实现。我们选择性地激发了硅多模总线波导的6种线性极化(LP)模式,用SOI芯片精确地控制了模式功率和相位。这使得我们可以定制任意叠加的模式集,从而合成普通的圆柱形矢量涡旋光束以及控制自旋和拓扑电荷的OAM光束。我们的紧凑型结构光发生器具有高开关速度和跨电信频段运行,为光通信和集成量子技术等应用铺平了道路。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

All-on-chip reconfigurable generation of scalar and vectorial orbital angular momentum beams

All-on-chip reconfigurable generation of scalar and vectorial orbital angular momentum beams

Structured light carrying angular momentum, such as spin angular momentum (SAM) and orbital angular momentum (OAM), has been at the core of new science and applications, driving the need for compact on-chip sources. While many static on-chip solutions have been demonstrated, as well as on-chip sources of free-space modes, no architecture that is fully reconfigurable in all angular momentum states and all on-chip has so far been possible. Here we report the first all-on-chip structured light generator for the creation of both scalar and vectorial angular momentum beams, facilitated through a silicon-on-insulator (SOI) chip with a silica mode multiplexer (silica chip). We selectively stimulate six linearly-polarized (LP) modes of the silica multimode bus waveguide, precisely controlling the modal powers and phases with the SOI chip. This allows us to tailor arbitrary superpositions of the mode set thus synthesizing common cylindrical vector vortex beams as well as OAM beams of controlled spin and topological charge. Our compact structured light generator exhibits high switching speed and operates across the telecom band, paving the way for applications such as optical communication and integrated quantum technologies.

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来源期刊
Light-Science & Applications
Light-Science & Applications 数理科学, 物理学I, 光学, 凝聚态物性 II :电子结构、电学、磁学和光学性质, 无机非金属材料, 无机非金属类光电信息与功能材料, 工程与材料, 信息科学, 光学和光电子学, 光学和光电子材料, 非线性光学与量子光学
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发文量
803
审稿时长
2.1 months
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