Large focal length planar focusing of Dyakonov polaritons in hyperbolic metamaterial

IF 4.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Progress in Natural Science: Materials International Pub Date : 2024-08-01 DOI:10.1016/j.pnsc.2024.06.003

Xiaoyu Xiong , Yihang Fan , Weipeng Wang , Yongzheng Wen , Zhengjun Zhang , Jingbo Sun , Ji Zhou

引用次数: 0

Abstract

Achieving subwavelength optical focusing is of great importance in nanophotonics. However, achieving focusing with both a small focal spot size and a large focal length remains elusive so far. Here, a large focal length planar focusing device is presented, utilizing highly oriented Dyakonov polaritons in hyperbolic metamaterial with periodic silver rings as the excitation source. Experimental results show that by controlling the size of the excitation sources, the focal length can reach 6λ₀ (where λ₀ is the illumination wavelength), and the focal spot size can be reduced to λ₀/10. This method provides new prospects for planar polariton optical applications.

查看原文本刊更多论文

双曲超材料中迪雅可诺夫极化子的大焦距平面聚焦

在纳米光子学中，实现亚波长光学聚焦非常重要。然而，同时实现小焦斑尺寸和大焦距的聚焦至今仍难以实现。本文介绍了一种大焦距平面聚焦装置，它利用双曲超材料中的高取向迪亚科诺夫极化子和周期性银环作为激励源。实验结果表明，通过控制激发光源的尺寸，焦距可以达到 6λ0（其中 λ0 为照明波长），焦斑尺寸可以减小到 λ0/10。这种方法为平面极化子光学应用提供了新的前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Progress in Natural Science: Materials International 综合性期刊-综合性期刊

CiteScore

8.60

自引率

2.10%

发文量

2812

审稿时长

49 days

期刊介绍： Progress in Natural Science: Materials International provides scientists and engineers throughout the world with a central vehicle for the exchange and dissemination of basic theoretical studies and applied research of advanced materials. The emphasis is placed on original research, both analytical and experimental, which is of permanent interest to engineers and scientists, covering all aspects of new materials and technologies, such as, energy and environmental materials; advanced structural materials; advanced transportation materials, functional and electronic materials; nano-scale and amorphous materials; health and biological materials; materials modeling and simulation; materials characterization; and so on. The latest research achievements and innovative papers in basic theoretical studies and applied research of material science will be carefully selected and promptly reported. Thus, the aim of this Journal is to serve the global materials science and technology community with the latest research findings. As a service to readers, an international bibliography of recent publications in advanced materials is published bimonthly.