Understanding quantum materials—solids in which interactions among constituent electrons
yield a great variety of novel emergent quantum phenomena—is a forefront challenge in …

Recently, considerable work has been directed at the development of an ultracompact X-ray
free-electron laser (UCXFEL) based on emerging techniques in high-field cryogenic …

We describe an emerging hard X-ray spectroscopy technique, stimulated X-ray emission
spectroscopy (S-XES). S-XES has the potential to characterize the electronic structure of 3d …

The success of x-ray free-electron lasers (XFELs) in recent years has greatly advanced
many scientific fields. However, most of these XFELs suffer from a low longitudinal …

There is a growing interest in designing and building compact X-ray Free Electron Lasers
(FELs) for scientific and industry applications. In this paper, we report an X-ray Regenerative …

High-gain free-electron lasers (FELs) are becoming important light sources at short
wavelengths such as the EUV and x-ray regimes. A particularly promising concept is the …

We present a detailed derivation of a formula for the small-gain calculation for an x-ray free
electron laser oscillator (XFELO) based on a medium-energy (3–4 GeV) storage ring. We …

Time-domain modeling of the thermal deformation of crystal optics can help define
acceptable operational ranges across the pulse-energy repetition-rate phase space. In this …

To align with the global trend of integrating synchrotron light source (SLS) and free electron
laser (FEL) facilities on one site, in line with examples such as SPring-8 and SACLA in …

If the quantum mechanical recoil of the electron due to its scattering from the undulator and
laser fields dominates the dynamics, a regime of the free-electron laser emerges where …