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 ...

Theoreticians report that they found no evidence of any universal topological signatures after performing the first ab initio investigation of high harmonic generation from topological insulators.

A team of researchers from the University of Oxford and Queen’s University Belfast in ...

High harmonic generation (HHG) is a highly non-linear phenomenon where a system (for example, an atom) absorbs many photons of a laser and emits photons of much higher energy, whose frequency is a ...

Nonlinear optics is a branch of optics that deals with the complex nonlinear relationships between the optical response of the medium and the incident light when it interacts with the optical medium.

“High harmonic generation has promising prospects in exploring the area of nonlinear optics and photonics, and applications in bio-imaging due to higher penetration depth and reduced photobleaching,” ...

A research team led by Professor Sheng Zhigao at the Hefei Institutes of Physical Science of the Chinese Academy of Sciences has, for the first time, observed the strong nonlinear magnetic second ...

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 ...