Actively tuning anisotropic light-matter interaction in biaxial hyperbolic materialα-MoO_(3) using phase change material VO_(2) and graphene  

作　　者：周昆 胡杨 吴必园 仲晓星 吴小虎 Kun Zhou;Yang Hu;Biyuan Wu;Xiaoxing Zhong;Xiaohu Wu(School of Safety Engineering,China University of Mining and Technology,Xuzhou 221116,China;Key Laboratory of Gas and Fire Control for Coal Mines,China University of Mining and Technology,Xuzhou 221116,China;Shandong Institute of Advanced Technology,Jinan 250100,China;School of Power and Energy,Northwestern Polytechnical University,Xi'an 710072,China)

机构地区：[1]School of Safety Engineering,China University of Mining and Technology,Xuzhou 221116,China [2]Key Laboratory of Gas and Fire Control for Coal Mines,China University of Mining and Technology,Xuzhou 221116,China [3]Shandong Institute of Advanced Technology,Jinan 250100,China [4]School of Power and Energy,Northwestern Polytechnical University,Xi'an 710072,China

出　　处：《Chinese Physics B》2024年第4期631-638,共8页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos.52204258 and 52106099);the Postdoctoral Research Foundation of China (Grant No.2023M743779);the Fundamental Research Funds for the Central Universities (Grant No.2022QN1017);the Key Research Development Projects in Xinjiang Uygur Autonomous Region (Grant No.2022B03003-3);the Shandong Provincial Natural Science Foundation (Grant No.ZR2020LLZ004)。

摘　　要：Anisotropic hyperbolic phonon polaritons(PhPs)in natural biaxial hyperbolic materialα-MoO_(3) has opened up new avenues for mid-infrared nanophotonics,while active tunability ofα-MoO_(3) PhPs is still an urgent problem necessarily to be solved.In this study,we present a theoretical demonstration of actively tuningα-MoO_(3) PhPs using phase change material VO_(2) and graphene.It is observed thatα-MoO_(3) PhPs are greatly dependent on the propagation plane angle of PhPs.The insulator-to-metal phase transition of VO_(2) has a significant effect on the hybridization PhPs of theα-MoO_(3)/VO_(2) structure and allows to obtain actively tunableα-MoO_(3) PhPs,which is especially obvious when the propagation plane angle of PhPs is 900.Moreover,when graphene surface plasmon sources are placed at the top or bottom ofα-MoO_(3) inα-MoO_(3)/VO_(2)structure,tunable coupled hyperbolic plasmon-phonon polaritons inside its Reststrahlen bands(RB s)and surface plasmonphonon polaritons outside its RBs can be achieved.In addition,the above-mentionedα-MoO_(3)-based structures also lead to actively tunable anisotropic spontaneous emission(SE)enhancement.This study may be beneficial for realization of active tunability of both PhPs and SE ofα-MoO_(3),and facilitate a deeper understanding of the mechanisms of anisotropic light-matter interaction inα-MoO_(3) using functional materials.

关 键 词：light-matter interaction hyperbolic material phase change material GRAPHENE 

分 类 号：O469[理学—凝聚态物理] TB34[理学—电子物理学]