The transfer of charge at the molecular level plays a fundamental role in many areas of
chemistry, physics, biology and materials science. Today, more than 60 years after the …

The development of attosecond technology is one of the most significant achievements in
the field of ultrafast optics over the past decade. Since the first experimental demonstration …

X-ray free-electron lasers (XFELs) and table-top sources of x-rays based upon high
harmonic generation (HHG) have revolutionized the field of ultrafast x-ray atomic and …

High-energy isolated attosecond pulses required for the most intriguing nonlinear
attosecond experiments as well as for attosecond-pump/attosecond-probe spectroscopy are …

We demonstrate the generation of a coherent water window x ray by extending the plateau
region of high-order harmonics under a neutral-medium condition. The maximum harmonic …

We demonstrate how a scheme called advanced dual-chirped optical parametric
amplification (DC-OPA) that employs two kinds of nonlinear crystal (BiB3O6 and MgO-doped …

We propose and demonstrate the generation of a continuum high-order harmonic spectrum
by mixing multicycle two-color (TC) laser fields with the aim of obtaining an intense isolated …

The advent of chirped-pulse amplification in the 1980s and femtosecond Ti: sapphire lasers
in the 1990s enabled transformative advances in intense laser–matter interaction physics …

The group delay dispersion, also known as the attochirp, of high-order harmonics generated
in gases has been identified as the main intrinsic limitation to the duration of Fourier …

An ultrafast high-power infrared pulse source employing a dual-chirped optical parametric
amplification (DC-OPA) scheme based on a Ti: sapphire pump laser system is theoretically …