Scientists have found a way to see ultrafast molecular interactions inside liquids using an extreme laser technique once ...

High harmonic generation (HHG) is a powerful nonlinear optical process whereby intense laser pulses interact with matter, resulting in the emission of light at multiples of the fundamental frequency.

This Collection brings together original research on high harmonic generation, focusing on the underlying physical mechanisms and on the next generation of experimental setups. It also highlights the ...

Scientists discover how a hidden crystal pattern in advanced materials can control how they emit light, offering new ways to guide ultrafast signals using lasers. (Nanowerk Spotlight) Modern ...

ICFO researchers have set a new record by generating the shortest soft X-ray pulse to date –just 19.2 attoseconds long. This is the fastest flash of light, faster than the atomic unit of time (24.2 ...

Liquids and solutions may seem simple, but at the molecular level they are constantly in motion. When sugar dissolves in water, for example, each ...

As demand for next-generation chips intensifies, high-harmonic generation (HHG) is becoming fundamental in semiconductor research and development. Erik Hosler, a specialist in semiconductor processes, ...

Figure 1 Schematic diagram of a nonlinear metasurface composed of asymmetric meta-atoms based on guided mode resonance and bound states in the continuum. Nonlinear optics is a branch of optics that ...