An important goal of modern condensed-matter physics involves the search for states of
matter with emergent properties and desirable functionalities. Although the tools for material …

A review on the recent development of intense laser‐driven terahertz (THz) sources is
provided here. The technologies discussed include various types of sources based on …

In the last two decades non-equilibrium spectroscopies have evolved from avant-garde
studies to crucial tools for expanding our understanding of the physics of strongly correlated …

Organic crystals with second-order optical nonlinearity feature very high and ultra-fast
optical nonlinearities and are therefore attractive for various photonics applications. During …

Ultrafast responses of BCS superconductor Nb 1-x Ti x N films in a nonadiabatic excitation
regime were investigated by using terahertz (THz) pump-THz probe spectroscopy. After an …

The coupling between superconductors and oscillation cycles of light pulses, ie, lightwave
engineering, is an emerging control concept for superconducting quantum electronics …

Strong optical pulses at mid-infrared and terahertz frequencies have recently emerged as
powerful tools to manipulate and control the solid state and especially complex condensed …

We report on compact and efficient laser-based THz generation in the terahertz frequency
gap (1–10 THz). The radiation is generated by optical rectification of a midinfrared laser in a …

Recent theoretical calculations predicted an order-of-magnitude increase in the efficiency of
terahertz pulse generation by optical rectification in lithium niobate when 500 fs long pump …

We demonstrate highly efficient terahertz (THz) generation by optical rectification (OR) of
near-optimum pump pulses centered at 1.03 μm in cryogenically cooled lithium niobate …