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

The frequency range of terahertz waves (THz waves) is between 0.1 and 10 THz and they
have properties such as low energy, penetration, transients, and spectral fingerprints, which …

The dynamical complexity of the hydrogen-bonded water network can be investigated with
intense Terahertz (THz) spectroscopy, which can drive the liquid into the nonlinear response …

We demonstrate a high average power terahertz time-domain spectroscopy (THZ-TDS) set-
up based on optical rectification in the tilted-pulse front geometry in lithium niobate at room …

Cellular refractive index is a vital phenotypic parameter for understanding the cell functional
activities. So far, there remains technical challenges to obtain refractive index of viable cells …

While bright terahertz sources are used to perform nonlinear experiments, they can be
advantageous for high-precision linear measurements of opaque samples. By placing the …

The study applies for the first time the eclipse Z-scan technique to measure LiNbO crystal's
nonlinear refractive index coefficient in the THz range. This technique is by one order of …

High-intensity optical radiation propagation in a transparent dielectric medium causes the
phenomena of pulse self-action and radiation generation at triple frequencies due to the …

To create self-controlled radiation photonics systems, it is necessary to have complete
information about the nonlinear properties of the materials used. In this Letter, the vibrational …

Ultra-fast switches are essential devices for basic research and technological development.
Here, we demonstrate that aqueous solutions of sodium iodide can be used for this purpose …