Electromagnon excitation in cupric oxide measured by Fabry-Pérot enhanced terahertz Mueller matrix ellipsometry
Sign Up to like & getrecommendations! Published in 2019 at "Scientific Reports"
DOI: 10.1038/s41598-018-37639-8
Abstract: Here we present the use of Fabry-Pérot enhanced terahertz (THz) Mueller matrix ellipsometry to measure an electromagnon excitation in monoclinic cupric oxide (CuO). As a magnetically induced ferroelectric multiferroic, CuO exhibits coupling between electric and… read more here.
Keywords: rot enhanced; electromagnon excitation; fabry rot; excitation ... See more keywords
Numerical Study of Plasmonic Resonance Enhanced, Terahertz Second Harmonic Generation from Graphene in the Otto Configuration
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Journal of Quantum Electronics"
DOI: 10.1109/jqe.2017.2708525
Abstract: We report on the plasmonic resonance-enhanced terahertz (THz) second-harmonic generation (SHG) from graphene via the technique of attenuated total reflection in the Otto configuration. Through our finite-difference time-domain numerical simulations, we reveal how greatly different… read more here.
Keywords: resonance; graphene; plasmonic resonance; resonance enhanced ... See more keywords
Enhanced terahertz focusing for a graphene-enabled active metalens.
Sign Up to like & getrecommendations! Published in 2020 at "Optics express"
DOI: 10.1364/oe.409746
Abstract: Graphene-based terahertz (THz) metasurfaces have the advantages of ultra-small thickness, electrical tunability, and fast tuning speed. However, many such structures suffer low efficiency, especially for transmissive devices. Here we propose a hybrid structure for focusing… read more here.
Keywords: focusing graphene; graphene; terahertz focusing; enabled active ... See more keywords
Metamaterial-enhanced terahertz vibrational spectroscopy for thin film detection
Sign Up to like & getrecommendations! Published in 2018 at "Optical Materials Express"
DOI: 10.1364/ome.8.000128
Abstract: We present metamaterial-enhanced terahertz vibrational spectroscopy to solve the low sensitivity problem of the THz ray absorption detection in molecular and biomolecular thin film. In a proof-of-principle experiment, we demonstrate the system in split ring… read more here.
Keywords: thin film; metamaterial enhanced; terahertz vibrational; spectroscopy ... See more keywords
Enhanced Terahertz Amplification Based on Photo-Excited Graphene-Dielectric Hybrid Metasurface
Sign Up to like & getrecommendations! Published in 2020 at "Nanomaterials"
DOI: 10.3390/nano10122448
Abstract: Graphene under optical pump has been shown to be an attractive gain medium with negative dynamic conductivity at terahertz frequencies. However, the amplification over a monolayer graphene is very weak due to its one-atom thickness.… read more here.
Keywords: amplification based; terahertz amplification; graphene dielectric; metasurface ... See more keywords