In this roadmap article, we have focused on the most recent advances in terahertz (THz)
imaging with particular attention paid to the optimization and miniaturization of the THz …

The frequency spectra and polarization states of terahertz waves can convey significant
information about physical interactions and material properties. Compact and miniaturized …

Terahertz waves are expected to be used in next-generation communications, detection,
and other fields due to their unique characteristics. As a basic part of the terahertz …

We report on the observation of the circular ratchet effect excited by terahertz laser radiation
in a specially designed two-dimensional metamaterial consisting of a graphene monolayer …

Graphene has ultrafast charge carrier dynamic and shows strong light–matter interaction
allowing the use in photovoltaic devices, fast photodetectors, saturable absorbers, and …

This paper presents the design and numerical investigation of tunable, ultra-compact, and
highly-efficient plasmonic filters based on stepped impedance resonators (SIRs). The …

The discovery of graphene and its fascinating capabilities has triggered an unprecedented
interest in inorganic two-dimensional (2D) materials. van der Waals layered materials such …

Plasmonic devices based on split ring resonator (SRR) of ultra-low-loss performance (high
Q-factor) are significant for a broad range of applications and studies. However, due to the …

Parametric generation of oscillations and waves is a paradigm, which is known to be
realized in various physical systems. Unique properties of quantum semiconductor …

In this paper, we report a study on Si nanopatterns, fabricated as a one-dimensional (1D) Si
nanograting with a sub-wavelength (≈ 200 nm) period. Unpolarized light normally incident …