• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nature >Controlling free electrons with optical whispering-gallery modes
【24h】

Controlling free electrons with optical whispering-gallery modes

机译：用光学潜水站控制自由电子方式

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Abstract Free-electron beams are versatile probes of microscopic structure and composition1,2, and have revolutionized atomic-scale imaging in several fields, from solid-state physics to structural biology3. Over the past decade, the manipulation and interaction of electrons with optical fields have enabled considerable progress in imaging methods4, near-field electron acceleration5,6, and four-dimensional microscopy techniques with high temporal and spatial resolution7. However, electron beams typically couple only weakly to optical excitations, and emerging applications in electron control and sensing8–11 require large enhancements using tailored fields and interactions. Here we couple a free-electron beam to a travelling-wave resonant cavity mode. The enhanced interaction with the optical whispering-gallery modes of dielectric microresonators induces a strong phase modulation on co-propagating electrons, which leads to a spectral broadening of 700 electronvolts, corresponding to the absorption and emission of hundreds of photons. By mapping the near-field interaction with ultrashort electron pulses in space and time, we trace the lifetime of the the microresonator following a femtosecond excitation and observe the spectral response of the cavity. The natural matching of free electrons to these quintessential optical modes could enable the application of integrated photonics technology in electron microscopy, with broad implications for attosecond structuring, probing quantum emitters and possible electron–light entanglement.
机译：抽象的自由电子束是微观结构和组合物的多功能探针，并在几个领域中具有彻底的原子级成像，从固态物理到结构生物学3。在过去的十年中，电子与光学场的操纵和相互作用在成像方法4，近场电子加速度5,6和具有高时空和空间分辨率的四维显微镜技术中具有相当大的进展。然而，电子束通常仅对光学激励较小，并且电子控制和敏感的新兴应用8-11使用量身定制的字段和相互作用需要大的增强功能。在这里，我们将自由电子束耦合到行进波谐振腔模式。与介电微度器的光学潜言画廊模式的增强的相互作用在共传播电子中引起强相调制，这导致700个电子遥控器的光谱扩展，对应于数百个光子的吸收和发射。通过在空间和时间内与超短电子脉冲进行映射近场相互作用，我们跟踪了微秒激励后微谐振器的寿命并观察腔的光谱响应。自由电子对这些典型光学模式的自然匹配可以使集成的光子技术在电子显微镜中应用，具有广泛意义，用于索引结构，探测量子发射器和可能的电子光缠结。

著录项

  • 来源
    《Nature》 |2020年第7810期|46-49|共4页
  • 作者

    Ofer Kfir; Hugo Lourenço-Martins; Gero Storeck; Murat Sivis; Tyler R. Harvey; Tobias J. Kippenberg; Armin Feist; Claus Ropers;

  • 作者单位

    University of Göttingen IV Physical Institute Göttingen Germany;

    University of Göttingen IV Physical Institute Göttingen Germany;

    University of Göttingen IV Physical Institute Göttingen Germany;

    University of Göttingen IV Physical Institute Göttingen Germany;

    University of Göttingen IV Physical Institute Göttingen Germany;

    Swiss Federal Institute of Technology Lausanne (EPFL) Lausanne Switzerland;

    University of Göttingen IV Physical Institute Göttingen Germany;

    University of Göttingen IV Physical Institute Göttingen Germany.Max Planck Institute for Biophysical Chemistry (MPIBPC) Göttingen Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号