Dual-band directional scattering with an all-dielectric trimer in the near-infrared region

Mu Haiwei; Xu Wenjing; Lv Jingwei; Xu Chunhong; Wang Famei; Liu Qiang; Liu Chao; Sun Tao; Chu Paul K.

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Dual-band directional scattering with an all-dielectric trimer in the near-infrared region

机译：用近红外区域中的全电介质三角形双带定向散射

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A silicon trimer is explored to tailor unidirectional forward scattering at multiple wavelengths in the near-infrared region with low loss using theoretical calculations and numerical simulations, which leads to the dramatic enhancement in unidirectional forward scattering and suppression of backward scattering. The higher moments in the trimer can be properly excited and balanced by breaking the symmetry of the trimer. The generalized Kerker conditions at two different wavelengths can be achieved in the trimer to further improve the scattering directivity. Our results provide insights into future development of all-dielectric low-loss nanoantennas in the near-infrared region. (C) 2019 Optical Society of America

机译：探索硅三角形以在近红外区域中的多个波长定制单向向前散射，使用理论计算和数值模拟，这导致单向前向散射和抑制后向散射的剧烈增强。通过打破三聚体的对称性，可以适当地激发微粒中的较高的瞬间。可以在三聚体中实现两个不同波长的广义的Kerker条件，以进一步提高散射方向性。我们的结果提供了近红外区域中全介电低损耗纳米环绕的未来发展的见解。（c）2019年光学学会

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来源
《Applied optics》 |2019年第18期|共8页
作者
Mu Haiwei; Xu Wenjing; Lv Jingwei; Xu Chunhong; Wang Famei; Liu Qiang; Liu Chao; Sun Tao; Chu Paul K.;
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Northeast Petr Univ Sch Elect Sci Daqing 163318 Peoples R China;

Northeast Petr Univ Sch Elect Sci Daqing 163318 Peoples R China;

Northeast Petr Univ Sch Elect Sci Daqing 163318 Peoples R China;

Harbin Engn Univ Sch Mat Sci &

Chem Engn Harbin 150001 Heilongjiang Peoples R China;

Northeast Petr Univ Sch Elect Sci Daqing 163318 Peoples R China;

Northeast Petr Univ Sch Elect Sci Daqing 163318 Peoples R China;

Northeast Petr Univ Sch Elect Sci Daqing 163318 Peoples R China;

MIT Media Lab Cambridge MA 02139 USA;

City Univ Hong Kong Dept Phys Kowloon Tat Chee Ave Hong Kong Peoples R China;

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Dual-band directional scattering with an all-dielectric trimer in the near-infrared region

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