User profiles for R. Coffee

Ryan Coffee

LCLS-SLAC National Accelerator Lab
Verified email at slac.stanford.edu
Cited by 15303

First lasing and operation of an ångstrom-wavelength free-electron laser

…, J Bozek, A Brachmann, P Bucksbaum, R Coffee… - nature …, 2010 - nature.com
The recently commissioned Linac Coherent Light Source is an X-ray free-electron laser at
the SLAC National Accelerator Laboratory. It produces coherent soft and hard X-rays with …

Achieving few-femtosecond time-sorting at hard X-ray free-electron lasers

M Harmand, R Coffee, MR Bionta, M Chollet… - Nature …, 2013 - nature.com
Recently, few-femtosecond pulses have become available at hard X-ray free-electron lasers.
Coupled with the available sub-10 fs optical pulses, investigations into few-femtosecond …

[HTML][HTML] Mega-electron-volt ultrafast electron diffraction at SLAC National Accelerator Laboratory

…, G Brown, M Centurion, TF Chase, R Coffee… - Review of Scientific …, 2015 - pubs.aip.org
Ultrafast electron probes are powerful tools, complementary to x-ray free-electron lasers,
used to study structural dynamics in material, chemical, and biological sciences. High …

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

…, L Müller, R Coffee, M Bionta, SW Epp, R Hartmann… - Nature materials, 2013 - nature.com
Ultrafast laser techniques have revealed extraordinary spin dynamics in magnetic materials
1 , 2 , 3 , 4 , 5 , 6 that equilibrium descriptions of magnetism 7 cannot explain. Particularly …

Self-terminating diffraction gates femtosecond X-ray nanocrystallography measurements

…, MJ Bogan, C Bostedt, JD Bozek, R Coffee… - Nature …, 2012 - nature.com
X-ray free-electron lasers have enabled new approaches to the structural determination of
protein crystals that are too small or radiation-sensitive for conventional analysis 1 . For …

Tunable isolated attosecond X-ray pulses with gigawatt peak power from a free-electron laser

…, Z Zhang, P Rosenberger, JW Aldrich, R Coffee… - Nature …, 2020 - nature.com
The quantum-mechanical motion of electrons in molecules and solids occurs on the sub-femtosecond
timescale. Consequently, the study of ultrafast electronic phenomena requires the …

Experimental demonstration of femtosecond two-color x-ray free-electron lasers

AA Lutman, R Coffee, Y Ding, Z Huang, J Krzywinski… - Physical review …, 2013 - APS
With an eye toward extending optical wave-mixing techniques to the x-ray regime, we present
the first experimental demonstration of a two-color x-ray free-electron laser at the Linac …

X-ray and optical wave mixing

…, JM Feldkamp, H Lemke, D Zhu, Y Feng, RN Coffee… - Nature, 2012 - nature.com
Light–matter interactions are ubiquitous, and underpin a wide range of basic research fields
and applied technologies. Although optical interactions have been intensively studied, their …

X-ray diffraction from isolated and strongly aligned gas-phase molecules with a free-electron laser

…, A Barty, C Bostedt, J Bozek, C Caleman, R Coffee… - Physical review …, 2014 - APS
We report experimental results on x-ray diffraction of quantum-state-selected and strongly
aligned ensembles of the prototypical asymmetric rotor molecule 2, 5-diiodobenzonitrile using …

R-Coffee: a method for multiple alignment of non-coding RNA

A Wilm, DG Higgins, C Notredame - Nucleic acids research, 2008 - academic.oup.com
R-Coffee can improve the accuracy of all the sequence aligners. We also show that the
consistency-based component of T-Coffee … Finally, we show that R-Coffee can also be used to …