Tunable optical cavity for an x-ray free-electron-laser oscillator

Kim, Kwang‐Je; Shvyd’ko, Yuri

doi:10.1103/physrevstab.12.030703

Cited by 74 publications

(75 citation statements)

References 21 publications

(36 reference statements)

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“…RIXS may also be possible using energy-tunable XFELO. 184) In conclusion, we hope that in the coming years the development of x-ray sources will keep on facilitating great advances of IXS as in the past.…”

Section: Summary and Future Outlookmentioning

confidence: 88%

Inelastic X-ray Scattering Studies of Electronic Excitations

2013

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Inelastic x-ray scattering (IXS) has developed into one of the most powerful momentum-resolved spectroscopies. Especially in the last decade, it has achieved significant progress utilizing brilliant x-rays from third-generation synchrotron radiation facilities. Simultaneously, theoretical efforts have been made to predict or interpret the experimental spectra. One of the scientific fields studied intensively by IXS is strongly correlated electron systems, where the interplay of charge, spin, and orbital degrees of freedom determines their physical properties. IXS can provide a new insight into the electron dynamics of the systems through the observation of charge, spin, and orbital excitations. Focusing on the momentum-resolved electronic excitations in strongly correlated electron systems, we review IXS studies and the present capabilities of IXS for the study of the dynamics of materials. With nonresonant inelastic x-ray scattering (NIXS), one can directly obtain dynamical charge correlation and we discuss its complementary aspects with inelastic neutron scattering. NIXS also has a unique capability of measuring higher multipole transitions, which are usually forbidden in conventional optical absorption. Resonant inelastic x-ray scattering (RIXS) is now established as a valuable tool for measuring charge, spin, and orbital excitations in a momentum-resolved manner. We describe RIXS works on cuprates in detail and show what kind of electronic excitations have been observed. We also discuss RIXS studies on other transition-metal compounds. Finally, we conclude with an outlook on IXS using next-generation x-ray sources.

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Section: Summary and Future Outlookmentioning

confidence: 88%

Inelastic X-ray Scattering Studies of Electronic Excitations

2013

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“…Implementation of an x-ray optical cavity plays a crucial role in research efforts towards the realization of an x-ray free electron laser oscillator (XFELO) [1,2]. Stable operation of an XFELO can only be achieved through precise control of the cavity geometry.…”

Section: Introductionmentioning

confidence: 99%

“…Stable operation of an XFELO can only be achieved through precise control of the cavity geometry. An angular stability of 10 nrad (rms) is required to generate coherent monochromatic radiation using successive Bragg reflections from cavity crystals [2]. A variety of technical solutions can be considered.…”

Section: Introductionmentioning

confidence: 99%

Nanoradian angular stabilization of x-ray optical components

Stoupin

Lenkszus

Laird

et al. 2010

Review of Scientific Instruments

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“…From Bragg's law ¼ H cosÂ, we see that the limits imposed on Â by the two-crystal cavity severely restrict the range of radiation wavelength. To circumvent this problem, Kim and Shvyd'ko [11] proposed the four-crystal FEL oscillator cavity of Fig. 4(b), for which the incidence angle can be PERFORMANCE OF THE X-RAY FREE-ELECTRON LASER .…”

Section: B X-ray Cavity Configurationsmentioning

confidence: 99%

Performance of the x-ray free-electron laser oscillator with crystal cavity

Lindberg

Kim

Shvyd’ko

et al. 2011

Phys. Rev. ST Accel. Beams

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Simulations of the x-ray free-electron laser (FEL) oscillator are presented that include the frequencydependent Bragg crystal reflectivity and the transverse diffraction and focusing using the two-dimensional FEL code GINGER. A review of the physics of Bragg crystal reflectors and the x-ray FEL oscillator is made, followed by a discussion of its numerical implementation in GINGER. The simulation results for a two-crystal cavity and realistic FEL parameters indicate $10 9 photons in a nearly Fourier-limited, ps pulse. Compressing the electron beam to 100 A and 100 fs results in comparable x-ray characteristics for relaxed beam emittance, energy spread, and/or undulator parameters, albeit in a larger radiation bandwidth. Finally, preliminary simulation results indicate that the four-crystal FEL cavity can be tuned in energy over a range of a few percent.

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Tunable optical cavity for an x-ray free-electron-laser oscillator

Cited by 74 publications

References 21 publications

Inelastic X-ray Scattering Studies of Electronic Excitations

Inelastic X-ray Scattering Studies of Electronic Excitations

Nanoradian angular stabilization of x-ray optical components

Performance of the x-ray free-electron laser oscillator with crystal cavity

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