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Laser & Optoelectronics Progress, Volume. 56, Issue 11, 112501(2019)

Exploration of Plasmon Modes in Two-Dimensional Quantum Dots

Renglai Wu1、*, Jun Quan1, and Mengtao Sun2
Author Affiliations
  • 1 College of Physics Science and Technology, Lingnan Normal University, Zhanjiang, Guangdong 524048, China
  • 2 School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (6)
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    References (56)
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    Figures & Tables(6)
    Schematic of two-dimensional quantum dots

    Fig. 1. Schematic of two-dimensional quantum dots

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    Each function versus frequency when Lx=Ly=4 and Ne=2. (a)-(b) Eigen-functions; (c)-(h) charge response |Q|

    Fig. 2. Each function versus frequency when Lx=Ly=4 and Ne=2. (a)-(b) Eigen-functions; (c)-(h) charge response |Q|

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    Eigen function versus frequency under different frequency ranges

    Fig. 3. Eigen function versus frequency under different frequency ranges

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    Charge response versus frequency of external potential under different frequency ranges (charge distributions when plasmon is excited)

    Fig. 4. Charge response versus frequency of external potential under different frequency ranges (charge distributions when plasmon is excited)

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    Charge response and charge distributions. (a) Charge response versus frequency of external potential when Lx=3 and ne=1/2; (b)-(d) charge distributions when plasmon is excited

    Fig. 5. Charge response and charge distributions. (a) Charge response versus frequency of external potential when Lx=3 and ne=1/2; (b)-(d) charge distributions when plasmon is excited

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    • Table 1. Various plasmon modes for different charge polarizations in two dimensional system

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      Table 1. Various plasmon modes for different charge polarizations in two dimensional system

      Plasmon modesMonopolar polarization inlongitudinal directionDipolar polarization inlongitudinal directionQuadrupolar polarization inlongitudinal direction
      Monopolar polarizationin transverse directionMonopole-monopole mode(inexistence in uncharged system)Dipole-monopole modeQuadrupole-monopole mode
      Dipolar polarizationin transverse directionMonopole-dipole modeDipole-dipole modeQuadrupole-dipole mode
      Quadrupolar polarizationin transverse directionMonopole-quadrupole modeDipole-quadrupole modeQuadrupole-quadrupole mode
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    Renglai Wu, Jun Quan, Mengtao Sun. Exploration of Plasmon Modes in Two-Dimensional Quantum Dots[J]. Laser & Optoelectronics Progress, 2019, 56(11): 112501

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    Paper Information

    Category: OPTOELECTRONICS

    Received: Dec. 13, 2018

    Accepted: Dec. 25, 2018

    Published Online: Jun. 13, 2019

    The Author Email: Wu Renglai (wurenglai@sohu.com)

    DOI:10.3788/LOP56.112501

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology