66 citations · 379 across the 25 of their papers we have counts for
26 papers
Signatures of misalignment in x-ray cavities of cavity-based x-ray free-electron lasers
Peng Qi, Yuri Shvyd'ko
Cavity-based x-ray free-electron lasers (CBXFEL) will allow use of optical cavity feedback to support generation of fully coherent x-rays of high brilliance and stability by electr…
Diamond Channel-Cut Crystals for High-Heat-Load, Beam-Multiplexing, Narrow-Band X-ray Monochromators
Yuri Shvyd'ko, Sergey Terentyev, Vladimir Blank +1
Next-generation, high-brilliance x-ray photon sources call for new x-ray optics. Here we demonstrate the feasibility of using monolithic diamond channel-cut crystals as high-heat-l…
Small Bragg-plane slope errors revealed in synthetic diamond crystals
Paresh Pradhan, Michael Wojcik, Xianrong Huang +8
Wavefront-preserving x-ray diamond crystal optics are essential for numerous applications in x-ray science. Perfect crystals with flat Bragg planes are a prerequisite for wavefront…
Diffraction gratings with two-orders-of-magnitude-enhanced dispersion rates for sub-meV-resolution soft x-ray spectroscopy
Yuri Shvyd'ko
Diffraction gratings with large angular dispersion rates are central to obtaining high spectral resolution in grating spectrometers operating over a broad spectral range from infra…
Output coupling from x-ray free-electron laser cavities with intracavity beam splitters
Yuri Shvyd'ko
Permeable mirrors are typically used for coupling photons out of laser cavities. A similar approach was proposed for output coupling photons from the cavities of x-ray free-electro…
Scientific Opportunities with an X-ray Free-Electron Laser Oscillator
Bernhard Adams, Gabriel Aeppli, Thomas Allison +47
An X-ray free-electron laser oscillator (XFELO) is a new type of hard X-ray source that would produce fully coherent pulses with meV bandwidth and stable intensity. The XFELO compl…
Aberration-free imaging of inelastic scattering spectra with x-ray echo spectrometers
Manuel Sánchez del Río, Yuri Shvyd'ko
We study conditions for aberration-free imaging of inelastic x-ray scattering (IXS) spectra with x-ray echo spectrometers. Aberration-free imaging is essential for achieving instru…
Theory and optical design of x-ray echo spectrometers
Yuri Shvyd'ko
X-ray echo spectroscopy, a space-domain counterpart of neutron spin echo, is a recently proposed inelastic x-ray scattering (IXS) technique. X-ray echo spectroscopy relies on imagi…
X-ray echo spectroscopy
Yuri Shvyd'ko
X-ray echo spectroscopy, a counterpart of neutron spin-echo, is being introduced here to overcome limitations in spectral resolution and weak signals of the traditional inelastic x…
Novel opportunities for sub-meV inelastic X-ray scattering at high-repetition rate self-seeded X-ray free-electron lasers
Oleg Chubar, Gianluca Geloni, Vitali Kocharyan +5
Inelastic X-ray scattering (IXS) is an important tool for studies of equilibrium dynamics in condensed matter. A new spectrometer recently proposed for ultra-high-resolution IXS (U…
Theory of angular dispersive imaging hard x-ray spectrographs
Yuri Shvyd'ko
A spectrograph is an optical instrument that disperses photons of different energies into distinct directions and space locations, and images photon spectra on a position-sensitive…
All-diamond optical assemblies for a beam-multiplexing X-ray monochromator at the Linac Coherent Light Source
S. Stoupin, S. A. Terentyev, V. D. Blank +16
A double-crystal diamond (111) monochromator recently implemented at the Linac Coherent Light Source (LCLS) enables splitting of the primary X-ray beam into a pink (transmitted) an…
Maximizing Spectral Flux from Self-Seeding Hard X-ray FELs
Xi Yang, Yuri Shvyd'ko
Fully coherent x-rays can be generated by self-seeding x-ray free-electron lasers (XFELs). Self-seeding by a forward Bragg diffraction (FBD) monochromator has been recently propose…
Time-delayed beam splitting with energy separation of x-ray channels
Yuri P. Stetsko, Yuri V. Shvyd'ko, G. Brian Stephenson
We introduce a time-delayed beam splitting method based on the energy separation of x-ray photon beams. It is implemented and theoretically substantiated on an example of an x-ray…
Hard X-ray Spectrographs with Resolution Beyond 100 micro-eV
Yuri Shvyd'ko, Stanislav Stoupin, Kiran Mundboth +1
Spectrographs take snapshots of photon spectra with array detectors by dispersing photons of different energies into distinct directions and spacial locations. Spectrographs requir…
Spatiotemporal Response of Crystals in X-ray Bragg Diffraction
Yuri Shvyd'ko, Ryan Lindberg
The spatiotemporal response of crystals in x-ray Bragg diffraction resulting from excitation by an ultra-short, laterally confined x-ray pulse is studied theoretically. The theory…
Disentangling a quantum antiferromagnet with resonant inelastic X-ray scattering
L. Andrew Wray, Ignace Jarrige, Kazuhiko Ikeuchi +11
Low-dimensional copper oxide lattices naturally manifest electronic states with strong short range quantum entanglement, which are known to lead to remarkable emergent material pro…
Time dependence of Bragg forward scattering and self-seeding of hard x-ray free-electron lasers
Ryan R. Lindberg, Yuri V. Shvyd'ko
Free-electron lasers (FELs) can now generate temporally short, high power x-ray pulses of unprecedented brightness, even though their longitudinal coherence is relatively poor. The…
Enhanced X-Ray Angular Dispersion and X-ray Spectrographs with Resolving Power Beyond 10
Yuri Shvyd'ko
Spectrograph is an optical device that is used to disperse photons of different energies into distinct directions and space locations, and to take a snapshot of the whole spect…
Angular Dispersion and Anomalous Transmission Cast Ultramonochromatic X Rays
Yuri Shvyd'ko, Stanislav Stoupin, Deming Shu +1
Optical spectrometers, instruments that work with monochromatic light, are commonly rated by the spectral bandwidth, which defines the ability to resolve closely spaced spectral co…
Spin-Split Conduction band in \eb\ and Tuning of Half-Metallicity with External Stimuli
Jungho Kim, Wei Ku, Chi-Cheng Lee +5
We report Eu L3-edge resonant inelastic x-ray scattering (RIXS) investigation of the electronic structure of EuB6. We observe that the RIXS spectral weight around 1.1 eV increases…
Nanoradian angular stabilization of x-ray optical components
Stanislav Stoupin, Frank Lenkszus, Robert Laird +3
An x-ray free electron laser oscillator (XFELO) has been recently proposed [K. Kim, Y. Shvyd'ko, and S. Reiche, Phys. Rev. Lett. 100, 244802 (2008)]. Angular orientation and positi…
Charge-transfer and Mott-Hubbard Excitations in FeBO3: Fe K edge Resonant Inelastic X-ray Scattering Study
Jungho Kim, Yuri Shvyd'ko
Momentum-resolved resonant inelastic x-ray scattering (RIXS) spectroscopy has been carried out at the Fe K edge, successfully for the first time. The RIXS spectra of a FeBO3 single…
Phonons as a probe of the magnetic state in doped and undoped BaFe2As2
D. Reznik, K. Lokshin, D. C. Mitchell +17
We measured phonon frequencies and linewidths in doped and undoped BaFe2As2 single crystals by inelastic x-ray scattering and compared our results with density functional theory (D…