Journal article

Ultra-wideband tri-layer transmissive linear polarization converter for terahertz waves

Rajour Tanyi Ako, Wendy SL Lee, Shaghik Atakaramians, Madhu Bhaskaran, Sharath Sriram, Withawat Withayachumnankul

APL PHOTONICS | AMER INST PHYSICS | Published : 2020

Abstract

Polarization control is shown to enhance functionalities of terahertz waves in various applications. As a step toward introducing efficient practical devices operating in the terahertz band, we propose and experimentally validate a free-standing three-layer polarization converter operating in transmission. The device can efficiently convert a linearly polarized terahertz wave to its orthogonal counterpart. Our device comprises split-ring and H-shaped resonators inserted between two layers of orthogonal wire gratings. The sole dielectric material is a cyclic olefin copolymer (COC) that has exceptionally low-loss to terahertz waves. The measurement demonstrates a conversion efficiency of >80%,..

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Grants

Awarded by Australian Research Council (ARC)


Funding Acknowledgements

This work was performed in part at the Micro Nano Research Facility at RMIT University in the Victorian Node of the Australian National Fabrication Facility (ANFF). R.T.A. acknowledges scholarship support from the RMIT Research Stipend Scholarship and RMIT Research International Tuition Fee. We acknowledge project funding from the Australian Research Council (ARC) through Grant Nos. DP170101922, LE150100001, and LE180100003.