中国物理B ›› 2014, Vol. 23 ›› Issue (2): 27804-027804.doi: 10.1088/1674-1056/23/2/027804

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Numerical demonstration of three-dimensional terahertz metamaterials based on the causality principle

Saeid Jamilan, Javad Nourinia, Mohammad Naghi Azarmanesh   

  1. Department of Electrical Engineering, Urmia University, Urmia, Iran
  • 收稿日期:2013-07-08 修回日期:2013-08-16 出版日期:2013-12-12 发布日期:2013-12-12

Numerical demonstration of three-dimensional terahertz metamaterials based on the causality principle

Saeid Jamilan, Javad Nourinia, Mohammad Naghi Azarmanesh   

  1. Department of Electrical Engineering, Urmia University, Urmia, Iran
  • Received:2013-07-08 Revised:2013-08-16 Online:2013-12-12 Published:2013-12-12
  • Contact: Saeid Jamilan E-mail:saeid.jamilan@gmail.com
  • About author:78.67.Pt; 78.20.Ci; 87.50.U-

摘要: A parameter retrieval algorithm based on the causality principle and Kramers–Kronig (KK) relations is employed to calculate the effective parameters of three-dimensional (3D) metamaterials. Using KK relations, the branch selecting problem, which is the challenge of effective parameter retrieval method, can be removed. To reveal the validity of the proposed algorithm, the constitutive refractive index of a homogeneous polymide cube is extracted. The result is in excellent agreement with the intrinsic refractive index of the polymide. Finally, the two terahertz metamaterials with 3D structures are designed and their effective parameters are then retrieved using the proposed algorithm. Numerical simulations are performed using the full-wave electromagnetic solver, CST Microwave Studio.

关键词: metamaterial, three-dimensional, causality principle, Kramers–, Kronig relations

Abstract: A parameter retrieval algorithm based on the causality principle and Kramers–Kronig (KK) relations is employed to calculate the effective parameters of three-dimensional (3D) metamaterials. Using KK relations, the branch selecting problem, which is the challenge of effective parameter retrieval method, can be removed. To reveal the validity of the proposed algorithm, the constitutive refractive index of a homogeneous polymide cube is extracted. The result is in excellent agreement with the intrinsic refractive index of the polymide. Finally, the two terahertz metamaterials with 3D structures are designed and their effective parameters are then retrieved using the proposed algorithm. Numerical simulations are performed using the full-wave electromagnetic solver, CST Microwave Studio.

Key words: metamaterial, three-dimensional, causality principle, Kramers–Kronig relations

中图分类号:  (Multilayers; superlattices; photonic structures; metamaterials)

  • 78.67.Pt
78.20.Ci (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))