Organic π‐conjugated crystals with second‐order optical nonlinearity are considerably
attractive materials for diverse terahertz (THz) wave photonics. An overview of the research …

High-index dielectric nanostructures can support optical resonances of electric and
magnetic character with ultralow linear absorption. In contrast to plasmonics, they can be …

Exploring new nonlinear optical (NLO) crystals for the output of deep-ultraviolet (DUV) lasers
via the frequency conversion technique is of great interest. Monofluorophosphate is a new …

In its 60 years of existence, the field of nonlinear optics has gained momentum especially
over the past two decades thanks to major breakthroughs in material science and …

Terahertz (THz) waves occupy the electromagnetic spectrum between microwave and
infrared radiation, with frequencies typically ranging from 0.1 to 10 THz. Compared with …

Judiciously designed two-dimensional THz metamaterials consisting of resonant metallic
structures embedded in a dielectric environment locally enhance the electromagnetic field of …

Second‐order nonlinear optical processes enable a wide range of applications used in
research and industry. The majority of available second‐order nonlinear devices however …

A temporal boundary refers to a specific time at which the properties of an optical medium
are abruptly changed. When light interacts with the temporal boundary, its spectral content …

For nonlinear optical materials to be applicable as efficient broadband terahertz (THz) wave
generators, low absorption with wide transparency in the THz frequency range is highly …

Second-order nonlinear optical effects in monolayer transition-metal dichalcogenides (ML
TMDCs) have attracted significant attention; these are almost exclusively associated with …