Ultrafast manipulation of hard x-rays by efficient Bragg switches

M. Herzog; W. Leitenberger; R. Shayduk; R. M. Van Der Veen; C. J. Milne; S. L. Johnson; I. Vrejoiu; M. Alexe; D. Hesse; M. Bargheer

doi:10.1063/1.3402773

Ultrafast manipulation of hard x-rays by efficient Bragg switches

M. Herzog, W. Leitenberger, R. Shayduk, R. M. Van Der Veen, C. J. Milne, S. L. Johnson, I. Vrejoiu, M. Alexe, D. Hesse, M. Bargheer

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Abstract

We experimentally demonstrate efficient switching of the hard x-ray Bragg reflectivity of a SrRuO₃ / SrTiO₃ superlattice by optical excitation of large-amplitude coherent acoustic superlattice phonons. The rocking curve changes drastically on a 1 ps timescale. The (0 0 116) reflection is almost extinguished (δR/R₀ =-0.91), while the (0 0 118) reflection increases by more than an order of magnitude (δR/ R₀ =24.1). The change of the x-ray structure factor depends nonlinearly on the phonon amplitude, allowing manipulation of the x-ray response on a timescale considerably shorter than the phonon period. Numerical simulations for a superlattice with slightly changed geometry and realistic parameters predict a switching-contrast ratio δR/R₀ of 700 with high reflectivity.

Original language	English (US)
Article number	161906
Journal	Applied Physics Letters
Volume	96
Issue number	16
DOIs	https://doi.org/10.1063/1.3402773
State	Published - Apr 19 2010
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3402773

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title = "Ultrafast manipulation of hard x-rays by efficient Bragg switches",

abstract = "We experimentally demonstrate efficient switching of the hard x-ray Bragg reflectivity of a SrRuO3 / SrTiO3 superlattice by optical excitation of large-amplitude coherent acoustic superlattice phonons. The rocking curve changes drastically on a 1 ps timescale. The (0 0 116) reflection is almost extinguished (δR/R0 =-0.91), while the (0 0 118) reflection increases by more than an order of magnitude (δR/ R0 =24.1). The change of the x-ray structure factor depends nonlinearly on the phonon amplitude, allowing manipulation of the x-ray response on a timescale considerably shorter than the phonon period. Numerical simulations for a superlattice with slightly changed geometry and realistic parameters predict a switching-contrast ratio δR/R0 of 700 with high reflectivity.",

author = "M. Herzog and W. Leitenberger and R. Shayduk and {Van Der Veen}, {R. M.} and Milne, {C. J.} and Johnson, {S. L.} and I. Vrejoiu and M. Alexe and D. Hesse and M. Bargheer",

note = "Funding Information: The time-resolved experiments were performed on the X05LA beamline at the Swiss Light Source, Paul Scherrer Institut, Villigen PSI, Switzerland. We thank the DFG for supporting the project via Grant Nos. BA 2281/3-1 and SFB 762.",

year = "2010",

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doi = "10.1063/1.3402773",

language = "English (US)",

volume = "96",

journal = "Applied Physics Letters",

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T1 - Ultrafast manipulation of hard x-rays by efficient Bragg switches

AU - Herzog, M.

AU - Leitenberger, W.

AU - Shayduk, R.

AU - Van Der Veen, R. M.

AU - Milne, C. J.

AU - Johnson, S. L.

AU - Vrejoiu, I.

AU - Alexe, M.

AU - Hesse, D.

AU - Bargheer, M.

N1 - Funding Information: The time-resolved experiments were performed on the X05LA beamline at the Swiss Light Source, Paul Scherrer Institut, Villigen PSI, Switzerland. We thank the DFG for supporting the project via Grant Nos. BA 2281/3-1 and SFB 762.

PY - 2010/4/19

Y1 - 2010/4/19

N2 - We experimentally demonstrate efficient switching of the hard x-ray Bragg reflectivity of a SrRuO3 / SrTiO3 superlattice by optical excitation of large-amplitude coherent acoustic superlattice phonons. The rocking curve changes drastically on a 1 ps timescale. The (0 0 116) reflection is almost extinguished (δR/R0 =-0.91), while the (0 0 118) reflection increases by more than an order of magnitude (δR/ R0 =24.1). The change of the x-ray structure factor depends nonlinearly on the phonon amplitude, allowing manipulation of the x-ray response on a timescale considerably shorter than the phonon period. Numerical simulations for a superlattice with slightly changed geometry and realistic parameters predict a switching-contrast ratio δR/R0 of 700 with high reflectivity.

AB - We experimentally demonstrate efficient switching of the hard x-ray Bragg reflectivity of a SrRuO3 / SrTiO3 superlattice by optical excitation of large-amplitude coherent acoustic superlattice phonons. The rocking curve changes drastically on a 1 ps timescale. The (0 0 116) reflection is almost extinguished (δR/R0 =-0.91), while the (0 0 118) reflection increases by more than an order of magnitude (δR/ R0 =24.1). The change of the x-ray structure factor depends nonlinearly on the phonon amplitude, allowing manipulation of the x-ray response on a timescale considerably shorter than the phonon period. Numerical simulations for a superlattice with slightly changed geometry and realistic parameters predict a switching-contrast ratio δR/R0 of 700 with high reflectivity.

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Ultrafast manipulation of hard x-rays by efficient Bragg switches

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