All-dielectric KTiOPO4 metasurfaces based on multipolar resonances in the terahertz region

被引：23
|
作者：
Tian, Jingyi [1 ,2 ]
Yang, Yuanqing [3 ]
Qiu, Min [2 ]
Laurell, Fredrik [1 ]
Pasiskevicius, Valdas [1 ]
Jang, Hoon [1 ]
机构：
[1] KTH, Royal Inst Technol, Dept Appl Phys, S-10691 Stockholm, Sweden
[2] Zhejiang Univ, Coll Opt Sci & Engn, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Zhejiang, Peoples R China
[3] Univ Southern Denmark, Ctr Nano Opt, Campusvej 55, DK-5230 Odense, Denmark
来源：
OPTICS EXPRESS | 2017年 / 25卷 / 20期
关键词：
STIMULATED POLARITON SCATTERING; POTASSIUM TITANYL PHOSPHATE; BROAD-BAND; GENERATION; PHASE; METAMATERIALS; POLARIZATION; REALIZATION;
D O I：
10.1364/OE.25.024068
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We employ ferroelectrics to study the multipolar scattering in all-dielectric metasurfaces based on KTiOPO4 (KTP) micro-disks for efficient manipulation of electromagnetic waves in the THz spectral region (0.6-1.5 THz). By adjusting the aspect ratio of the disks near the multipolar resonances, we show that the KTP disk array can form a multifunctional metasurface that covers the entire range of the electromagnetic response with resonantly enhanced anisotropic properties. The proposed ferroelectric metasurfaces will provide a versatile platform to manipulate THz waves, and open possibilities to monolithically combine it with THz generation. (C) 2017 Optical Society of America
引用
收藏
页码：24068 / 24080
页数：13
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