Superhybrid Mode-Enhanced Optical Torques on Mie-Resonant Particles

Yuzhi Shi, Lei Ming Zhou, Ai Qun Liu, Manuel Nieto-Vesperinas, Tongtong Zhu, Amir Hassanfiroozi, Jingquan Liu, Hui Zhang, Din Ping Tsai, Hang Li, Weiqiang Ding, Weiming Zhu, Ye Feng Yu, Alfredo Mazzulla, Gabriella Cipparrone, Pin Chieh Wu, C. T. Chan, Cheng Wei Qiu

研究成果: Article同行評審

10 引文 斯高帕斯(Scopus)

摘要

Circularly polarized light carries spin angular momentum, so it can exert an optical torque on the polarization-anisotropic particle by the spin momentum transfer. Here, we show that giant positive and negative optical torques on Mie-resonant (gain) particles arise from the emergence of superhybrid modes with magnetic multipoles and electric toroidal moments, excited by linearly polarized beams. Anomalous positive and negative torques on particles (doped with judicious amount of dye molecules) are over 800 and 200 times larger than the ordinary lossy counterparts, respectively. Meanwhile, a rotational motor can be configured by switching the s- and p-polarized beams, exhibiting opposite optical torques. These giant and reversed optical torques are unveiled for the first time in the scattering spectrum, paving another avenue toward exploring unprecedented physics of hybrid and superhybrid multipoles in metaoptics and optical manipulations.

原文English
頁(從 - 到)1769-1777
頁數9
期刊Nano letters
22
發行號4
DOIs
出版狀態Published - 2022 2月 23

All Science Journal Classification (ASJC) codes

  • 生物工程
  • 化學 (全部)
  • 材料科學(全部)
  • 凝聚態物理學
  • 機械工業

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