Quantum plasmons in the hybrid nanostructures of double vacancy defected graphene and metallic nanoarrays  

作　　者：Rui Tang Yang Xu Hong Zhang Xin-Lu Cheng 唐睿;徐阳;张红;程新路(College of Physics,Sichuan University,Chengdu 610065,China;Institute of Atomic and Molecular Physics,Sichuan University,Chengdu 610065,China;Key Laboratory of High Energy Density Physics and Technology of Ministry of Education,Sichuan University,Chengdu 610065,China)

机构地区：[1]College of Physics,Sichuan University,Chengdu 610065,China [2]Institute of Atomic and Molecular Physics,Sichuan University,Chengdu 610065,China [3]Key Laboratory of High Energy Density Physics and Technology of Ministry of Education,Sichuan University,Chengdu 610065,China

出　　处：《Chinese Physics B》2021年第1期530-536,共7页中国物理B（英文版）

基　　金：Project supported by the National Key R&D Program of China(Grant No.2017YFA0303600);the National Natural Science Foundation of China(Grant Nos.11974253 and 11774248)。

摘　　要：We study the plasmonic properties of hybrid nanostructures consisting of double vacancy defected graphene(DVDGr)and metallic nanoarrays using the time-dependent density functional theory. It is found that DVDGr with pure and mixed noble/transition-metal nanoarrays can produce a stronger light absorption due to the coherent resonance of plasmons than graphene nanostructures. Comparing with the mixed Au/Pd nanoarrays, pure Au nanoarrays have stronger plasmonic enhancement. Furthermore, harmonics from the hybrid nanostructures exposed to the combination of lasers ranged from ultraviolet to infrared and a controlling pulse are investigated theoretically. The harmonic plateau can be broadened significantly and the energy of harmonic spectra is dramatically extended by the controlling pulse. Thus, it is possible to tune the width and intensity of harmonic spectrum to achieve broadband absorption of radiation. The methodology described here not only improves the understanding of the surface plasmon effect used in a DVDGr-metal optoelectronic device but also may be applicable to different optical technologies.

关 键 词：plasmon double vacancy defected graphene mixed metallic nanoarrays multi-beam laser harmonic spectrum 

分 类 号：TQ127.11[化学工程—无机化工] TB383.1[一般工业技术—材料科学与工程] TQ13