基于氧化铟锡的风扇型中红外手性超材料及其圆二向色性

朱叶欣; 李亚楠; 施维捷; 张文涛; 闫长春

doi:10.37188/CO.2019-0190

Volume 13 Issue 4

Aug. 2020

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Chinese Optics > 2020 > 13(4): 722-727.

ZHU Ye-xin, LI Ya-nan, SHI Wei-jie, ZHANG Wen-tao, YAN Chang-chun. Fan-shaped mid-infrared chiral metamaterials based on indium tin oxide and their circular dichroism[J]. Chinese Optics, 2020, 13(4): 722-727. doi: 10.37188/CO.2019-0190

Citation:

ZHU Ye-xin, LI Ya-nan, SHI Wei-jie, ZHANG Wen-tao, YAN Chang-chun. Fan-shaped mid-infrared chiral metamaterials based on indium tin oxide and their circular dichroism[J]. Chinese Optics, 2020, 13(4): 722-727. doi: 10.37188/CO.2019-0190

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Fan-shaped mid-infrared chiral metamaterials based on indium tin oxide and their circular dichroism

doi: 10.37188/CO.2019-0190

1.
School of Physics and Electronic Engineering, Jiangsu Key Laboratory of Advanced Laser Materials and Devices, Jiangsu Normal University, Xuzhou 221116, China
2.
School of Mathematics and Physics, Xuzhou University of Technology, Xuzhou 221111, China

Funds: Supported by National Natural Science Foundation of China (No.61771227); Innovation and Entrepreneurship Training Program for College Students in Jiangsu Normal University (No.XSJCX8049)

More Information

Corresponding author: yhchangchun@163.com
Received Date: 25 Sep 2019
Rev Recd Date: 15 Oct 2019
Publish Date: 01 Aug 2020

Abstract

Abstract

A mid-infrared chiral metamaterial was designed to overcome the problems of large volume and high cost of traditional mid-infrared laser polarization state controls, The fan-shaped chiral structure material made of Indium Tin Oxide (ITO) was designed and its Circular Dichroism (CD) characteristics in the mid-infrared band were studied. The CD variation characteristics of the structure were discussed by changing the filling material, the thickness, the size, the number, and the material of fan blades. The simulation results show that when the filling material is silicon and the number of fan blade is six, the strongest CD signal of 0.052 is obtained near the wavelength of 5.3 μm by selecting the appropriate fan thickness and size. Moreover, compared with the silver and gold, the structure made of ITO exhibits broadband circular dichroism, which provides a new idea for the design of broadband polarization-state control devices in the mid-infrared band.
- ITO,
- fan-shaped chiral metamaterials,
- mid-infrared,
- broadband,
- circular dichroism

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References(20)

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