MoS2 Broadband Coherent Perfect Absorber for Terahertz Waves

被引：24

作者：

Zhu, Weiren ^{[1
]}

Xiao, Fajun ^{[2
,3
]}

Kang, Ming ^{[4
]}

Sikdar, Debabrata ^{[5
]}

Liang, Xianling ^{[1
]}

Geng, Junping ^{[1
]}

Premaratne, Malin ^{[6
]}

Jin, Ronghong ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Dept Elect Engn, Shanghai 200240, Peoples R China

[2] Northwestern Polytech Univ, Key Lab Space Appl Phys & Chem, Minist Educ, Sch Sci, Xian 710129, Peoples R China

[3] Northwestern Polytech Univ, Shaanxi Key Lab Opt Informat Technol, Sch Sci, Xian 710129, Peoples R China

[4] Tianjin Normal Univ, Coll Phys & Mat Sci, Tianjin 300387, Peoples R China

[5] Imperial Coll London, Fac Nat Sci, Dept Chem, London SW7 2AZ, England

[6] Monash Univ, Adv Comp & Simulat Lab, Dept Elect & Comp Syst Engn, Clayton, Vic 3800, Australia

来源：

IEEE PHOTONICS JOURNAL | 2016年 / 8卷 / 06期

基金：

澳大利亚研究理事会; 中国国家自然科学基金;

关键词：

Coherent perfect absorber; broadband; MoS2; LIGHT;

D O I：

10.1109/JPHOT.2016.2633571

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present a comprehensive analysis of terahertz waves propagation through a bulk MoS2 crystal slab. It is shown that broadband coherent perfect absorption can be achieved and the coherent absorptivity can be adjusted from 1.57% to 99.97% by means of phase modulation. Moreover, the relative bandwidth for over 90% coherent absorptivity can be as wide as 179%. By increasing the doping rate in MoS2 crystal, the coherent absorptivity spectrum exhibits a clear blueshift whilst the peak coherent absorptivity remains over 99.9%. Full-wave numerical simulations are further carried out to confirm the validity of our theoretical analysis.

引用

页数：7

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