Version 1
: Received: 3 March 2023 / Approved: 3 March 2023 / Online: 3 March 2023 (12:28:00 CET)
How to cite:
Zhou, B.; Rasmussen, M.; Whelan, P.R.; Ji, J.; Shivayogimath, A.; Bøggild, P.; Jepsen, P.U. Nonlinear Conductivity Response of Graphene on Thin-Film PET Characterized by Transmission and Reflection Air-Plasma THz-TDS. Preprints2023, 2023030074. https://doi.org/10.20944/preprints202303.0074.v1.
Zhou, B.; Rasmussen, M.; Whelan, P.R.; Ji, J.; Shivayogimath, A.; Bøggild, P.; Jepsen, P.U. Nonlinear Conductivity Response of Graphene on Thin-Film PET Characterized by Transmission and Reflection Air-Plasma THz-TDS. Preprints 2023, 2023030074. https://doi.org/10.20944/preprints202303.0074.v1.
Cite as:
Zhou, B.; Rasmussen, M.; Whelan, P.R.; Ji, J.; Shivayogimath, A.; Bøggild, P.; Jepsen, P.U. Nonlinear Conductivity Response of Graphene on Thin-Film PET Characterized by Transmission and Reflection Air-Plasma THz-TDS. Preprints2023, 2023030074. https://doi.org/10.20944/preprints202303.0074.v1.
Zhou, B.; Rasmussen, M.; Whelan, P.R.; Ji, J.; Shivayogimath, A.; Bøggild, P.; Jepsen, P.U. Nonlinear Conductivity Response of Graphene on Thin-Film PET Characterized by Transmission and Reflection Air-Plasma THz-TDS. Preprints 2023, 2023030074. https://doi.org/10.20944/preprints202303.0074.v1.
Abstract
We demonstrate that the conductivity of graphene on thin-film polymer substrates can be accurately determined by reflection-mode air-plasma-based THz time-domain spectroscopy (THz-TDS). The phase uncertainty issue associated with reflection measurements is discussed, and our implementation is validated by convincing agreement with graphene electrical properties extracted from more conventional transmission-mode measurements. Both the reflection and transmission THz-TDS measurements reveal strong nonlinear and instantaneous conductivity depletion across an ultra-broad bandwidth under relatively high incident THz electrical field strengths.
Keywords
Graphene; AC conductivity; THz time-domain spectroscopy; Reflection spectroscopy
Subject
PHYSICAL SCIENCES, Optics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
