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Dive into the research topics where Patrick Hillyard is active.

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Featured researches published by Patrick Hillyard.


quantum electronics and laser science conference | 2006

Femtosecond lattice dynamics in photoexcited bismuth: Ultrafast optical and x-ray measurements

David M. Fritz; Bernhard W. Adams; C. Blome; Phillip H. Bucksbaum; Adrian L. Cavalieri; Simon Engemann; S. Fahy; P. H. Fuoss; Kelly J. Gaffney; Patrick Hillyard; Jen Kaspar; Aaron M. Lindenberg; Sooheyong Lee; Brian K. McFarland; Drew A. Meyer; Éamonn D. Murray; Matthieu Nicoul; Reinhard Pahl; J. Rudati; D. P. Siddons; Klaus Sokolowski-Tinten; Jared K. Wahlstrand; Jerome Hastings; David A. Reis

We investigate high amplitude coherent optical phonon dynamics in bismuth through femtosecond X-ray and optical scattering. From these experiments, we present the first detailed measurements of changes in the interatomic potential following high-density photoexcitation.


15th International Conference on Ultrafast Phenomena (2006), paper WD7 | 2006

Ultrafast Optical and X-Ray Measurements of Femtosecond Lattice Dynamics in Photoexcited Bismuth

David M. Fritz; Bernhard W. Adams; C. Blome; Phillip H. Bucksbaum; Adrian L. Cavalieri; Simon Engemann; S. Fahy; P. H. Fuoss; K. J. Gaffney; Patrick Hillyard; Michael Horn-von Hoegen; Mathias Kammler; Jen Kaspar; Aaron M. Lindenberg; Sooheyong Lee; Brian K. McFarland; Drew A. Meyer; Eamonn Murray; Matthieu Nicoul; J. Rudati; D. P. Siddons; Klaus Sokolowski-Tinten; Dietrich von der Linde; Jerome Hastings; David A. Reis

We present the first detailed measurements of the interatomic potential of photoexcited bismuth using ultrafast optical and x-ray scattering. Our results show that electronic softening is responsible for the strong chirp in phonon frequency.


Science | 2007

Ultrafast bond softening in bismuth : Mapping a solid's interatomic potential with X-rays

David M. Fritz; David A. Reis; Bernhard W. Adams; R. A. Akre; J. Arthur; C. Blome; P. H. Bucksbaum; Adrian L. Cavalieri; Simon Engemann; S. Fahy; R. W. Falcone; P. H. Fuoss; Kelly J. Gaffney; M. J. George; Janos Hajdu; Marcus P. Hertlein; Patrick Hillyard; M. Horn-von Hoegen; M. Kammler; Jen Kaspar; Reinhard Kienberger; P. Krejcik; Sooheyong Lee; Aaron M. Lindenberg; Brian K. McFarland; Drew A. Meyer; T. Montagne; Éamonn D. Murray; A. J. Nelson; Matthieu Nicoul


Physical Review Letters | 2008

X-Ray Diffuse Scattering Measurements of Nucleation Dynamics at Femtosecond Resolution

Aaron M. Lindenberg; Simon Engemann; Kelly J. Gaffney; Klaus Sokolowski-Tinten; Jörgen Larsson; Patrick Hillyard; David A. Reis; David M. Fritz; J. Arthur; R. A. Akre; M. J. George; A. Deb; P. H. Bucksbaum; Janos Hajdu; Drew A. Meyer; Matthieu Nicoul; C. Blome; Th. Tschentscher; Adrian L. Cavalieri; R. W. Falcone; S. H. Lee; Reinhard Pahl; J. Rudati; P. H. Fuoss; A. J. Nelson; P. Krejcik; D. P. Siddons; Patrick Lorazo; Jerome Hastings


Physical Review Letters | 2007

Carrier-Density-Dependent Lattice Stability in InSb

Patrick Hillyard; Kelly J. Gaffney; Aaron M. Lindenberg; Simon Engemann; R. A. Akre; J. Arthur; C. Blome; P. H. Bucksbaum; Adrian L. Cavalieri; A. Deb; R. W. Falcone; David M. Fritz; P. H. Fuoss; Janos Hajdu; P. Krejcik; Jörgen Larsson; S. H. Lee; Drew A. Meyer; A. J. Nelson; R. Pahl; David A. Reis; J. Rudati; D. P. Siddons; K. Sokolowski-Tinten; D. von der Linde; Jerome Hastings


Physical Review B | 2008

Carrier-induced disordering dynamics in InSb studied with density functional perturbation theory

Patrick Hillyard; David A. Reis; Kelly J. Gaffney


Physical Review B | 2009

Atomic resolution mapping of the excited-state electronic structure of Cu2O with time-resolved x-ray absorption spectroscopy

Patrick Hillyard; Satyanarayana V N T Kuchibhatla; T. E. Glover; Marcus P. Hertlein; Nils Huse; Ponnusamy Nachimuthu; Laxmikant V. Saraf; Suntharampillai Thevuthasan; Kelly J. Gaffney


Physical Review Letters | 2007

Publisher's Note: Carrier-Density-Dependent Lattice Stability in InSb [Phys. Rev. Lett. 98, 125501 (2007)]

Patrick Hillyard; K. J. Gaffney; Aaron M. Lindenberg; Simon Engemann; R. A. Akre; J. Arthur; C. Blome; Phillip H. Bucksbaum; Adrian L. Cavalieri; A. Deb; R. W. Falcone; David M. Fritz; P. H. Fuoss; Janos Hajdu; P. Krejcik; Jörgen Larsson; S. H. Lee; Drew A. Meyer; A. J. Nelson; Reinhard Pahl; David A. Reis; J. Rudati; D. P. Siddons; K. Sokolowski-Tinten; D. von der Linde; Jerome Hastings


Bulletin of the American Physical Society | 2007

Ultrafast X-Ray Diffraction Study of Potential Energy Surface Evolution in InSb Under Intense Laser Excitation

Patrick Hillyard; Kelly J. Gaffney; Aaron M. Lindenberg; Simon Engemann; David A. Reis; Aniruddha Deb; Drew A. Meyer; Jerome Hastings


Bulletin of the American Physical Society | 2007

Non-Thermal Liquid Formation Dynamics Studied with Ultrafast Diffuse X-Ray Scattering

Kelly J. Gaffney; C. Blome; Simon Engemann; David M. Fritz; Patrick Hillyard; Jörgen Larsson; Aaron M. Lindenberg; Matthieu Nicoul; David A. Reis; Klaus Sokolowski-Tinten; J. B. Hastings

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David A. Reis

SLAC National Accelerator Laboratory

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Kelly J. Gaffney

SLAC National Accelerator Laboratory

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David M. Fritz

SLAC National Accelerator Laboratory

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Jerome Hastings

SLAC National Accelerator Laboratory

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P. H. Fuoss

Argonne National Laboratory

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Matthieu Nicoul

University of Duisburg-Essen

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