Title :
Broadband terahertz reflective linear polarization convertor
Author :
Yong Zhi Cheng ; Withayachumnankul, Withawat ; Upadhyay, Ankit ; Headland, Daniel ; Yan Nie ; Rong Zhou Gong ; Bhaskaran, Madhu ; Sriram, Srinath ; Abbott, Derek
Author_Institution :
Sch. of Electr. & Electron. Eng., Univ. of Adelaide, Adelaide, SA, Australia
Abstract :
A broadband terahertz reflective linear polarization convertor is proposed. The structure is composed of a metallic disk and split-ring resonators in proximity to a ground plane. It is found that the structure exhibits three neighboring resonances, from which the linear polarization of incident light can be rotated to its orthogonal counterpart after reflection. Both simulated and experimental results exhibit that the polarization conversion ratio is greater than 80% in the range of 0.53-1.34 THz, equivalent to 82.1% relative bandwidth. This presented design for enhancing efficiency of polarization conversion has potential applications in the area of terahertz spectroscopy, imaging, and communications.
Keywords :
broadband networks; convertors; electromagnetic wave reflection; resonators; submillimetre wave devices; terahertz wave devices; broadband terahertz reflective linear polarization convertor; communications; frequency 0.53 THz to 1.34 THz; ground plane; imaging; incident light; metallic disk; neighboring resonances; orthogonal counterpart; polarization conversion ratio efficiency enhancement; relative bandwidth; split-ring resonators; terahertz spectroscopy; Broadband communication; Converters; Erbium; Metamaterials; Optical resonators; Reflection; Reflection coefficient;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956188
