Parametric Down-Conversion of X Rays into the Optical Regime

A. Schori; C. Bömer; D. Borodin; S. P. Collins; B. Detlefs; M. Moretti Sala; S. Yudovich; S. Shwartz

doi:10.1103/PhysRevLett.119.253902

Parametric Down-Conversion of X Rays into the Optical Regime

A. Schori, C. Bömer, D. Borodin, S. P. Collins, B. Detlefs, M. Moretti Sala, S. Yudovich, S. Shwartz

Department of Physics - at Bar-Ilan University

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

We report the observation of parametrically down-converted x-ray signal photons at photon energies that correspond to idler photons at optical wavelengths. The count-rate dependence on the angles of the input beam and of the detector and on the slit sizes agrees with theory within the experimental uncertainties. The nonlinear susceptibility, which we calculated from the measured efficiencies, is comparable to the nonlinear susceptibility evaluated from the measurements of x-ray and optical wave mixing. The results of the present Letter advance the development of a spectroscopy method for probing valence-electron charges and the microscopic optical response of crystals with atomic-scale resolution.

Original language	English
Article number	253902
Journal	Physical Review Letters
Volume	119
Issue number	25
DOIs	https://doi.org/10.1103/PhysRevLett.119.253902
State	Published - 22 Dec 2017

Bibliographical note

Publisher Copyright:
© 2017 American Physical Society.

Funding

We acknowledge the European Synchrotron Radiation Facility for provision of synchrotron radiation facilities. We thank Diamond Light Source for access to Beamline I16 (Proposal No. MT14646), which contributed to the results presented here. This work was supported by the Israel Science Foundation (ISF), Grant No. 1038/13. This research was supported by a Marie Curie FP7 Integration Grant within the 7th European Union Framework Programme under Grant Agreement No. PCIG13-GA-2013-618118. D. B. gratefully acknowledges support from the Ministry of Aliyah and Immigrant Absorption of Israel. C. B. is supported by the Deutsche Forschungsgemeinschaft (DFG) via SFB925 (Teilprojekt A4), and is thankful for travel support by the Centre for Ultrafast Imaging (CUI) and Partnership for Innovation, Education and Research (PIER) to the ESRF and Diamond Light Sources.

Funders	Funder number
Centre for Ultrafast Imaging
PIER
Partnership for Innovation, Education and Research
FP7 People: Marie-Curie Actions
Diamond Light Source
Deutsche Forschungsgemeinschaft	SFB925
European Synchrotron Radiation Facility
Ministry of Aliyah and Immigrant Absorption
Israel Science Foundation	1038/13
Seventh Framework Programme	PCIG13-GA-2013-618118

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abstract = "We report the observation of parametrically down-converted x-ray signal photons at photon energies that correspond to idler photons at optical wavelengths. The count-rate dependence on the angles of the input beam and of the detector and on the slit sizes agrees with theory within the experimental uncertainties. The nonlinear susceptibility, which we calculated from the measured efficiencies, is comparable to the nonlinear susceptibility evaluated from the measurements of x-ray and optical wave mixing. The results of the present Letter advance the development of a spectroscopy method for probing valence-electron charges and the microscopic optical response of crystals with atomic-scale resolution.",

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AU - Moretti Sala, M.

AU - Yudovich, S.

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AB - We report the observation of parametrically down-converted x-ray signal photons at photon energies that correspond to idler photons at optical wavelengths. The count-rate dependence on the angles of the input beam and of the detector and on the slit sizes agrees with theory within the experimental uncertainties. The nonlinear susceptibility, which we calculated from the measured efficiencies, is comparable to the nonlinear susceptibility evaluated from the measurements of x-ray and optical wave mixing. The results of the present Letter advance the development of a spectroscopy method for probing valence-electron charges and the microscopic optical response of crystals with atomic-scale resolution.

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Parametric Down-Conversion of X Rays into the Optical Regime

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