Multi-optical effects in two-dimensional photonic crystals of metallic pairs

Multi-optical effects in two-dimensional photonic crystals of metallic pairs
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金属对二维光子晶体中的多光学效应

DOI:
10.1209/0295-5075/ac2e2a
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发表时间:
2021-10
期刊:
EPL (Europhysics Letters)
影响因子:
--
通讯作者:
Huanyang Chen
Huanyang Chen
中科院分区:
其他
文献类型:
--
作者:
Qilin Duan;Ying Chen;Huanyang Chen

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光子晶体中的光束控制对于光束操纵具有重要意义。在本文中,我们设计了自准直,分束和负折射效应的光子晶体基于金属对沉浸在介质背景。通过使用单个金属对阵列,实现了宽带和宽角度的自准直效果。同时,由于极端的各向异性,通过利用等频率轮廓的亲吻来实现光束分裂效果。然后,我们重新构造具有滑移对称性的单胞,以实现在宽频率范围内的负折射效应,并实现平面透镜的效果。为了说明这一现象,一个平面透镜的基础上重构的单位细胞的设计和数值演示。
Beam steering in photonic crystals is significant in manipulating light beams. In this paper, we design self-collimation, beam splitting, and negative refraction effects in photonic crystals based on metallic pairs immersed in dielectric background. By using a single array of metallic pairs, a broadband and wide-angle self-collimation effect is achieved. Meanwhile, due to the extreme anisotropy, a beam splitting effect is achieved by utilizing the kissing of equi-frequency contours. We then restructure the unit cell with glide symmetry to achieve negative refraction effect in a wide frequency range and realize the effect of flat lens. To illustrate this phenomenon, a flat lens based on the restructured unit cell is designed and numerically demonstrated.
DOI: --
发表时间: 1995-07
期刊: --
影响因子: --
作者:
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