Analysis on spatial distribution of Poynting vectors for multimer plasmonic fields

Yuji Sunaba; Keiji Sasaki

doi:10.1117/12.2616005

27 October 2021 Analysis on spatial distribution of Poynting vectors for multimer plasmonic fields

Yuji Sunaba, Keiji Sasaki

Proceedings Volume 11926, Optical Manipulation and Structured Materials Conference 2021; 1192608 (2021) https://doi.org/10.1117/12.2616005
Event: SPIE Technologies and Applications of Structured Light, 2021, Online, Japan

Abstract

Optical tweezers are very effective for manipulating objects larger than the wavelength of light. But it is difficult at the nanoscale because of the diffraction-limited focused spot size. In this context, there is a growing interest in the manipulation nanoparticles using plasmonic nanostructures. Here, we investigated the optical rotational manipulation of nanoparticle by using plasmonic multimer structures. Under some conditions such as using circularly polarized light or optical vortex for incident light, spin angular momentum and orbital angular momentum are transferred to the localized field. In this case, to clarify the force that the nanoparticles receive, we analyzed spatial distribution of Poynting vectors closely related to scattering force.

Citation Download Citation

Yuji Sunaba and Keiji Sasaki "Analysis on spatial distribution of Poynting vectors for multimer plasmonic fields", Proc. SPIE 11926, Optical Manipulation and Structured Materials Conference 2021, 1192608 (27 October 2021); https://doi.org/10.1117/12.2616005

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