• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Optics Letters >Real-time terahertz wave channeling via multifunctional metagratings: a sparse array of all-graphene scatterers
【24h】

Real-time terahertz wave channeling via multifunctional metagratings: a sparse array of all-graphene scatterers

机译：通过多功能比代的实时太赫兹波窜：全石墨烯散射体的稀疏阵列

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

Acquiring full control over a large number of diffraction orders can be strongly attractive in the case of realizing multifunctional devices such as multichannel reflectors. Recently, the concept of metagrating has been introduced, which enables obtaining the desired diffraction pattern through a sparse periodic array of engineered scatterers. In this Letter, for the first time, to the best of our knowledge, a tunable all-graphene multichannel meta-reflector is proposed for operating at terahertz (THz) frequencies. In the supercell level, the designed metagrating is composed of three graphene ribbons of different controllable chemical potentials which can be regarded as a five-channel THz meta-reflector. By choosing proper distribution of DC voltages feeding the ribbons, our design can realize different intriguing functionalities such as anomalous reflection, retroreflection, and three-channel power splitting within a single shared aperture and with high efficiency. This Letter paves the way toward designing highly efficient and tunable THz multichannel meta-reflectors with many potential applications in photonics and optoelectronics. (C) 2020 Optical Society of America
机译：在实现诸如多通道反射器的多功能设备的情况下，对大量衍射令的完全控制可能是强烈的吸引力。最近，已经引入了蟒蛇的概念，这使得能够通过稀疏的周期性的工程散射体阵列获得所需的衍射图。在这封信中，首次据我们所知，提出了一种可调谐的全图形多声道元反射器，用于在太赫兹（THz）频率下工作。在超级晶层中，设计的双晶体由三个不同可控化学电位的石墨烯丝带组成，该电位可以被视为五通道THz元反射器。通过选择馈送带的直流电压的适当分布，我们的设计可以实现不同的有趣功能，例如异常反射，逆行和三声道功率分裂在单个共用孔径和高效率。这封信铺设了设计高效和可调的THz多通道元反射器，在光子和光电子中具有许多潜在应用。 （c）2020美国光学学会

著录项

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