.png){kind=icon}
返回
Optical spin sorting chain
.png){kind=icon}
OA
AI
DOI：10.1364/OE.437725.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Transverse spin angular momentum of light is a key concept in recent nanophotonics to realize unidirectional light transport in waveguides by spin-momentum locking. Herein we theoretically propose subwavelength nanoparticle chain waveguides that efficiently sort optical spins with engineerable spin density distributions. By arranging high-refractive-index nanospheres or nanodisks of different sizes in a zigzag manner, directional optical spin propagation is realized. The origin of efficient spin transport is revealed by analyzing the dispersion relation and spin angular momentum density distributions, being attributed to guided modes that possess transverse spin angular momenta. In contrast to conventional waveguides, the proposed asymmetric waveguide can spatially separate up- and down-spins and locate one parity inside and the other outside the structure. Moreover, robustness against bending the waveguide and its application as an optical spin sorter are presented. Compared to previous reports on spatial engineering of local spins in photonic crystal waveguides, we achieved miniaturization of the entire footprint down to the subwavelength scale. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Keyword:
INTERFACE
MOMENTUM
期刊
IF:
3.3
论文数:
6.1W
被引数:
14.3W
机构
引用论文
Colloidal Solutions of Silicon Nanospheres toward All-Dielectric Optical Metafluids.png)
NANO LETTERS
OAAI
NANO LETTERSIF9.1
OAAI分享收藏分享收藏分享收藏Expression of papillomavirus L1 proteins regulated by authentic gene codon usage is favoured in G2/M-like cells in differentiating keratinocytesVirology
VirologyIF0
PREAI
分享收藏
查看更多内容