Terekhov Pavel D, Baryshnikova Kseniia V, Greenberg Yakov, Fu Yuan Hsing, Evlyukhin Andrey B, Shalin Alexander S, Karabchevsky Alina
Photonics and Electrooptical Engineering Unit, Ben-Gurion University, Beer-Sheva, 8410501, Israel.
Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University, Beer-Sheva, 8410501, Israel.
Sci Rep. 2019 Mar 5;9(1):3438. doi: 10.1038/s41598-019-40226-0.
All-dielectric nanophotonics lies at a forefront of nanoscience and technology as it allows to control light at the nanoscale using its electric and magnetic components. Bulk silicon does not experience any magnetic response, nevertheless, we demonstrate that the metasurface made of silicon parallelepipeds allows to excite the magnetic dipole moment leading to the broadening and enhancement of the absorption. Our investigations are underpinned by the numerical predictions and the experimental verifications. Also surprisingly we found that the resonant electric quadrupole moment leads to the enhancement of reflection. Our results can be applied for a development of absorption based devices from miniature dielectric absorbers, filters to solar cells and energy harvesting devices.
全介质纳米光子学处于纳米科学与技术的前沿，因为它能够利用光的电场和磁场分量在纳米尺度上控制光。块状硅不会产生任何磁响应，然而，我们证明由硅平行六面体制成的超表面能够激发磁偶极矩，从而导致吸收的展宽和增强。我们的研究得到了数值预测和实验验证的支持。同样令人惊讶的是，我们发现共振电四极矩会导致反射增强。我们的结果可应用于基于吸收的器件开发，从微型介电吸收器、滤波器到太阳能电池和能量收集装置。
