Scholarlink

<p>Optical vortices, beams that carry a twist, are pivotal in advanced technologies like optical manipulation, optical communications and imaging. However, their utility has been hampered by a fundamental limitation: the size and spread of the beam change inevitably with its twist and color, making stable, scalable systems difficult to achieve. Here we show that using precisely engineered metasurfaces to control light’s radial momentum enables the generation of a class of ‘achromatic non-diffracting perfect vortex beams’ (ANPVBs). These beams maintain an almost perfectly constant diameter, regardless of their twist or color across the visible spectrum (450–780 nm), and resist spreading over long distances. By decoupling beam size from these previously limiting factors, our work provides a robust and versatile platform for applications in high-capacity optical communication, quantum information processing and imaging.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Ultrabroadband, achromatic, and non-diffracting perfect optical vortex generation via radial momentum control in dielectric metasurfaces

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年11月25日

查看全文
  • Tian Xia,
  • Zhenwei Xie,
  • Qiang Zhang,
  • Wenchun Xiao,
  • Hui Yang,
  • Yueqiang Hu,
  • Huigao Duan,
  • Yangjian Cai,
  • Xiaocong Yuan

摘要

Optical vortices, beams that carry a twist, are pivotal in advanced technologies like optical manipulation, optical communications and imaging. However, their utility has been hampered by a fundamental limitation: the size and spread of the beam change inevitably with its twist and color, making stable, scalable systems difficult to achieve. Here we show that using precisely engineered metasurfaces to control light’s radial momentum enables the generation of a class of ‘achromatic non-diffracting perfect vortex beams’ (ANPVBs). These beams maintain an almost perfectly constant diameter, regardless of their twist or color across the visible spectrum (450–780 nm), and resist spreading over long distances. By decoupling beam size from these previously limiting factors, our work provides a robust and versatile platform for applications in high-capacity optical communication, quantum information processing and imaging.