Tunable Tamm plasmon polaritons and perfect absorption in a metal-PC cavity

被引：13

作者：

Li, Liang ^{[1
]}

Zhao, Hua ^{[2
,3
]}

Zhang, Jingwen ^{[2
,3
]}

Hao, Haoyue ^{[1
]}

Xing, Fei ^{[1
]}

机构：

[1] Shandong Univ Technol, Sch Phys & Optoelect Engn, Zibo 255000, Peoples R China

[2] Harbin Inst Technol, Inst Modern Opt, Dept Phys, Harbin 150001, Heilongjiang, Peoples R China

[3] Key Lab Microopt & Photon Technol Heilongjiang Pr, Harbin 150001, Heilongjiang, Peoples R China

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2019年 / 52卷 / 25期

基金：

中国国家自然科学基金;

关键词：

optical Tamm states; perfect absorption; photonic crystals; tunable optical filters; refractive index detector; ABSORBER; STATES;

D O I：

10.1088/1361-6463/ab1523

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We propose a metal-photonic crystal (PC) cavity structure, which had a narrow band absorption in the band-gap of PC. The electric field was strongly enhanced near the cavity when the wavelength of incident light corresponded to the absorption peak, which meant the proposed structure could generate Tamm plasmon polaritons. Through adjusting the thickness of the cavity, the wavelength of absorption peak could be tuned from similar to 1510 nm to similar to 1690 nm in this work. Meanwhile, the refractive index of the cavity also affected the absorption spectrum. Importantly, the proposed structure could realize perfect absorption at suitable conditions, and the maximum absorptance reached 0.999 95. The period number of PC and the thickness of silver film also had great influence on the absorption spectrum, which has also been investigated in this paper.

引用

页数：5

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