祝贺以蔡艺军博士研究生为第一作者，朱锦锋副教授为通信作者的的论文"Enhanced spatial near-infrared modulation of graphene-loadedperfect absorbers using plasmonic nanoslits"在中科院分区JCR2区的国际期刊《Optics Express》（影响因子3.488）上发表。
作者：Yijun Cai,Jinfeng Zhu*,Qing Huo Liu,Timothy Lin,JianyangZhou,Longfang Ye,and Zhiping Cai
摘要：Modulating spatial near-infrared light for ultra-compactelectrooptic devices is a critical issue in optical communication and imaging applications.To date, spatial near-infrared modulators based on graphene have been reported,but they showed limited modulation effects due to the relatively weaklight-graphene interaction. In combination with graphene and metallicnanoslits, we design a kind of ultrathin near-infrared perfect absorber withenhanced spatial modulation effects and independence on a wide range ofincident angles. The modulated spectral shift of central wavelength is up to258.2 nm in the near-infrared range, which is more
promising in applications than state-of-the-art devices. The modulation enhancementis attributed to the plasmonic nanoslit mode, in which the optical electricfield is highly concentrated in the deep subwavelength scale and thelight-graphene interaction is significantly strengthened. The physical insightis deeply revealed by a combination of equivalent circuit and electromagneticfield analysis. The design principles are not only crucial for spatialnear-infrared modulators, but also provide a key guide for developing activenear-infrared patch nanoantennas based on graphene.
文章链接：https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-23-25-32318&id=333293
