Terahertz spectroscopy in biomedical field: a review on signal-to-noise ratio improvement

Y Peng, C Shi, Y Zhu, M Gu, S Zhuang - PhotoniX, 2020 - Springer
With the non-ionizing, non-invasive, high penetration, high resolution and spectral
fingerprinting features of terahertz (THz) wave, THz spectroscopy has great potential for the …

Metallic and dielectric metasurfaces in photoconductive terahertz devices: a review

AE Yachmenev, DV Lavrukhin, IA Glinskiy… - Optical …, 2020 - spiedigitallibrary.org
This review highlights recent and novel trends focused on metallic (plasmonic) and dielectric
metasurfaces in photoconductive terahertz (THz) devices. We demonstrate the great …

Giant and controllable Goos-Hänchen shifts based on surface plasmon resonance with graphene-MoS2 heterostructure

Q You, Y Shan, S Gan, Y Zhao, X Dai… - Optical Materials …, 2018 - opg.optica.org
Surface plasmon resonance (SPR) with two-dimensional (2D) materials has been proposed
to enhance the sensitivity of biosensors. Here, we will apply SPR to greatly enhance and …

Emerging transistor technologies capable of terahertz amplification: A way to re-engineer terahertz radar sensors

M Božanić, S Sinha - Sensors, 2019 - mdpi.com
This paper reviews the state of emerging transistor technologies capable of terahertz
amplification, as well as the state of transistor modeling as required in terahertz electronic …

Exceptional point in a metal-graphene hybrid metasurface with tunable asymmetric loss

S Li, X Zhang, Q Xu, M Liu, M Kang, J Han… - Optics Express, 2020 - opg.optica.org
Observation of exceptional points (EPs) in non-Hermitian parity-time (PT) symmetric systems
has led to various nontrivial physics and exotic phenomena. Here, a metal-graphene hybrid …

Tunable broadband terahertz polarizer using graphene-metal hybrid metasurface

K Meng, SJ Park, LH Li, DR Bacon, L Chen, K Chae… - Optics …, 2019 - opg.optica.org
We demonstrate an electrically tunable polarizer for terahertz (THz) frequency
electromagnetic waves formed from a hybrid graphene-metal metasurface. Broadband (> 3 …

Wideband THz Filtering by Graphene-Over-Dielectric Periodic Structures With and Without MgF2 Defect Layer

M Pourmand, PK Choudhury - IEEE Access, 2020 - ieeexplore.ieee.org
Investigation of the spectral response of graphene-dielectric (SiO 2)-based periodic structure
was made in the far-infrared (IR) to the mid-IR frequency range, and the effects of different …

Tunable enhanced bandwidth all-graphene-dielectric terahertz metamaterial absorber/reflector

C Yuan, R Yang, J Wang, J Tian - Optik, 2020 - Elsevier
We report an all-graphene-dielectric terahertz metamaterial absorber/reflector, whose
absorption bandwidth and absorptivity can be tuned by applying the bias voltage to regulate …

Ultra-compact integrated terahertz modulator based on a graphene metasurface

M Kim, S Kim, S Kim - Optics Letters, 2021 - opg.optica.org
We propose a new type of a mid-infrared ultra-compact optical modulator composed of a
graphene metasurface. Unlike the previously proposed schemes based on loss variation of …