The research of THz enhancement transmittance based on metamaterials

Author

Degang Xu ; Hao Zhang ; Hong Yu ; Jiaqi Li ; Chao Yan ; Wei Shi ; Jianquan Yao

Author_Institution

Inst. of Laser & Opto-Electron., Tianjin Univ., Tianjin, China

fYear

2013

fDate

1-6 Sept. 2013

Firstpage

1

Lastpage

2

Abstract

THz parametric oscillators (TPOs) based on phonon-polariton scattering in a LiNbO₃ crystal are one of promise methods of obtaining high power tunable THz radiation. However, how to effectively reduce the absorption and enhance the transmittance of terahertz (THz) in LiNbO₃ still remains a question. In this paper, we present a numerical simulation solution of antireflection coating using metamaterials based on Lithium niobate substrates. This structure effectively reduces the reflection and enhances the transmission near a specifically designed terahertz (THz) frequency band. Nearly 1.7% of reflection rate and over 94.7% of transmission rate are obtained near 1.2~1.3 THz. Such a design can promote THz wave, which has been generated in or pass through Lithium niobate, to radiate to outside space.

Keywords

antireflection coatings; lithium compounds; microwave photonics; numerical analysis; optical design techniques; optical metamaterials; terahertz metamaterials; terahertz wave generation; terahertz wave spectra; LiNbO₃; THz enhancement transmittance; THz parametric oscillators; THz wave generation; antireflection coating; high power tunable THz radiation; lithium niobate substrates; metamaterials; numerical simulation; phonon-polariton scattering; reflection; terahertz absorption; terahertz frequency band; Metamaterials; Nanobioscience; Reflectivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2013 38th International Conference on

Conference_Location

Mainz

Type

conf

DOI

10.1109/IRMMW-THz.2013.6665417

Filename

6665417