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Engineering Symmetry-Breaking Nanocrescent Arrays for Nanolasing

机译：用于纳米激光的突破工程对称性的新月形阵列。

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摘要

This paper describes a symmetry-breaking plasmonic lattice structure that can support narrow resonances as optical feedback for nanolasing. A scalable technique is developed to fabricate nanocrescent arrays with low-structural symmetry unit cells to achieve in-plane quadrupolar lattice plasmon modes. These lattice plasmons with extremely narrow linewidths preserve nonzero net dipole moments under normal excitation. Ultrafast band-edge lasing can be switched on and off by changing the polarization of the incident pump light. The quadrupolar lattice plasmon lasing process is simulated with a semi-quantum model and the sharp tips on the nanocrescents accelerate the lasing buildup process and enhance stimulated emission.
机译：本文描述了一种对称破坏的等离子晶格结构，该结构可以支持窄共振作为纳米激光的光反馈。开发了可扩展的技术来制造具有低结构对称性晶胞的纳米新月形阵列，以实现面内四极晶格等离子体激元模式。这些具有极窄线宽的晶格等离激元在正常激发下保持非零的净偶极矩。可以通过改变入射泵浦光的偏振来打开和关闭超快带边缘激光。用半量子模型模拟了四极晶格等离子体激元激射过程，纳米月牙上的尖锐尖端加速了激射积累过程并增强了受激发射。

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  • 来源
    《Advanced Functional Materials》 |2019年第42期|1904157.1-1904157.8|共8页
  • 作者

    Lin Yuanhai; Wang Danqing; Hu Jingtian; Liu Jianxi; Wang Weijia; Guan Jun; Schaller Richard D.; Odom Teri W.;

  • 作者单位

    Northwestern Univ Dept Chem Evanston IL 60208 USA|Beijing Univ Technol Inst Informat Photon Technol Beijing 100124 Peoples R China|Beijing Univ Technol Coll Appl Sci Beijing 100124 Peoples R China;

    Northwestern Univ Grad Program Appl Phys Evanston IL 60208 USA;

    Northwestern Univ Dept Mat Sci & Engn Evanston IL 60208 USA;

    Northwestern Univ Dept Chem Evanston IL 60208 USA;

    Northwestern Univ Dept Chem Evanston IL 60208 USA|Argonne Natl Lab Ctr Nanoscale Mat 9700 S Cass Ave Argonne IL 60439 USA;

    Northwestern Univ Dept Chem Evanston IL 60208 USA|Northwestern Univ Grad Program Appl Phys Evanston IL 60208 USA|Northwestern Univ Dept Mat Sci & Engn Evanston IL 60208 USA;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    plasmon lasing; plasmonic nanocrescents; quadrupolar lattice plasmons; symmetry breaking; tip effects;

    机译：等离子体激射等离子体纳米新月形;四极晶格等离子体激元;对称破坏提示效果;

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