Femtosecond laser filamentation is a unique nonlinear optical phenomenon when high-
power ultrafast laser propagation in all transparent optical media. During filamentation in the …

High-harmonic generation is a universal response of matter to strong femtosecond laser
fields, coherently upconverting light to much shorter wavelengths. Optimizing the conversion …

Multichannel molecular high-order harmonic generation (MHOHG) from a single electron
asymmetric molecular ion HeH 2+ is investigated numerically. It is found that considerable …

Tabletop coherent x-ray sources extending to multi-keV or higher photon energies have
versatile applications, including in 4D imaging and semiconductor detectors. However …

In the context of x-ray lensless imaging, we present a recent approach for Fourier transform
holography based on the use of extended references. Major advances shown here rely on a …

Resonance enhancement of high-order harmonic generation has recently been found in the
interaction of intense ultrashort laser pulses with laser ablated plasma plumes. It is a …

The high power and variable repetition-rate of Yb femtosecond lasers makes them very
attractive for ultrafast science. However, for capturing sub-200 fs dynamics, efficient, high …

We describe the generation of high-order elliptically and circularly polarized harmonic
spectra in an aligned H+ 2 molecule ion by a combination of two-colour ultrashort intense …

We compare the generation of high-order harmonics in the water window (283-543 eV) with
0.8-µm and 2.2-µm few-cycle lasers at a pulse repetition rate of 100 kHz. Using conventional …

The high-order harmonic generation (HHG) in xenon is studied by using the time-dependent
density-functional theory. The dynamics of all electrons on the outer 4th and 5th atomic …