Linac Coherent Light Source soft x-ray materials science instrument optical design and monochromator commissioning

Heimann, Philip; Krupin, O.; Schlotter, W. F.; Turner, J.; Krzywiński, J.; Sorgenfrei, F.; Messerschmidt, Marc; Bernstein, David P.; Chalupský, J.; Hájková, V.; Hau‐Riege, Stefan P.; Holmes, Michael; Juha, L.; Kelez, Nicholas; Lüning, J.; Nordlund, Dennis; Perea, Mónica Fernández; Scherz, Andreas; Soufli, Régina; Würth, W.; Rowen, M.

doi:10.1063/1.3633947

Cited by 88 publications

(65 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A grating monochromator selected the photon energy with a resolution of 0.5 eV (1). The x-ray beam was focused to a 70 µm spot size at the sample, resulting in x-ray fluences below 2 mJ/cm 2 .…”

Section: Methodsmentioning

confidence: 99%

Nanoscale spin reversal by non-local angular momentum transfer following ultrafast laser excitation in ferrimagnetic GdFeCo

et al. 2013

View full text Add to dashboard Cite

Section: Methodsmentioning

confidence: 99%

Nanoscale spin reversal by non-local angular momentum transfer following ultrafast laser excitation in ferrimagnetic GdFeCo

et al. 2013

View full text Add to dashboard Cite

“…Time-resolved resonant soft x-ray diffraction measurements were carried out at the SXR beamline [29] of the Linac Coherent Light Source (LCLS), using monochromatised x-rays of 10 fs pulse duration with a repetition rate of 60 Hz and a bandwidth of 400 meV at the Fe L 3 edge (707 eV photon energy). A pump-laser with photon energy hν = 1.55 eV and 70 fs pulse duration was synchronized to the x-ray pulses.…”

Section: Methodsmentioning

confidence: 99%

Speed limit of the insulator–metal transition in magnetite

et al. 2013

View full text Add to dashboard Cite

As the oldest known magnetic material, magnetite (Fe3O4) has fascinated mankind for millennia. As the first oxide in which a relationship between electrical conductivity and fluctuating/localized electronic order was shown1, magnetite represents a model system for understanding correlated oxides in general. Nevertheless, the exact mechanism of the insulator–metal, or Verwey, transition has long remained inaccessible2, 3, 4, 5, 6, 7, 8. Recently, three-Fe-site lattice distortions called trimerons were identified as the characteristic building blocks of the low-temperature insulating electronically ordered phase9. Here we investigate the Verwey transition with pump–probe X-ray diffraction and optical reflectivity techniques, and show how trimerons become mobile across the insulator–metal transition. We find this to be a two-step process. After an initial 300 fs destruction of individual trimerons, phase separation occurs on a 1.5±0.2 ps timescale to yield residual insulating and metallic regions. This work establishes the speed limit for switching in future oxide electronics10

show abstract

“…Monochromatic beamlines using the single-grating design for the X-ray region are still in operation at FELs, as is the case for the soft x-ray materials science (SXR) instrument at the Linac Coherent Light Source (LCLS) FEL-facility [42]. The beamline is operated at energies higher than 500 eV, i.e., λ < 2.5 nm, with a source divergence of 16 µrad FWHM, giving a resolution of ≈5000 from 500 to 1000 eV and lower for higher energies.…”

Section: Single-grating Monochromators For Felsmentioning

confidence: 99%

Design Study of Time-Preserving Grating Monochromators for Ultrashort Pulses in the Extreme-Ultraviolet and Soft X-Rays

et al. 2017

View full text Add to dashboard Cite

Abstract:The design of grating-based instruments to handle and condition coherent ultrafast pulses in the extreme-ultraviolet is discussed. The main application of such instruments is the monochromatization of high-order laser harmonics and free-electron-laser pulses in the femtosecond time scale. Broad-band monochromators require the use of diffraction gratings at grazing incidence. A grating can be used for the spectral selection of ultrashort pulses without altering the pulse duration in a significant way, provided that the number of illuminated grooves is equal to the resolution. We discuss here the design conditions to be fulfilled by a grating monochromator that does not increase the pulse duration significantly longer than the Fourier limit.

show abstract

Linac Coherent Light Source soft x-ray materials science instrument optical design and monochromator commissioning

Cited by 88 publications

References 14 publications

Nanoscale spin reversal by non-local angular momentum transfer following ultrafast laser excitation in ferrimagnetic GdFeCo

Nanoscale spin reversal by non-local angular momentum transfer following ultrafast laser excitation in ferrimagnetic GdFeCo

Speed limit of the insulator–metal transition in magnetite

Design Study of Time-Preserving Grating Monochromators for Ultrashort Pulses in the Extreme-Ultraviolet and Soft X-Rays

Contact Info

Product

Resources

About