Time-Resolved sub-Ångström Metrology by Temporal Phase Interferometry near 
X-Ray Resonances of Nuclei

Goerttler, Stephan; Heeg, Kilian Peter; Kaldun, Andreas; Reiser, Patrick; Strohm, Cornelius; Haber, Johann; Ott, Christian; Subramanian, Rajagopalan; Röhlsberger, Ralf; Evers, Jörg; Pfeifer, Thomas

doi:10.1103/PhysRevLett.123.153902

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Time-Resolved sub-Ångström Metrology by Temporal Phase Interferometry near X-Ray Resonances of Nuclei

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Goerttler, Stephan
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Heeg, Kilian Peter
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society,;

/persons/resource/persons37846

Kaldun, Andreas
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons118579

Reiser, Patrick
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society,;

/persons/resource/persons37850

Ott, Christian
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Subramanian, Rajagopalan
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Evers, Jörg
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society,;

/persons/resource/persons30892

Pfeifer, Thomas
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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https://doi.org/10.1103/PhysRevLett.123.153902
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Citation

Goerttler, S., Heeg, K. P., Kaldun, A., Reiser, P., Strohm, C., Haber, J., et al. (2019). Time-Resolved sub-Ångström Metrology by Temporal Phase Interferometry near X-Ray Resonances of Nuclei. Physical Review Letters, 123(15): 153902. doi:10.1103/PhysRevLett.123.153902.

Cite as: https://hdl.handle.net/21.11116/0000-0004-F388-0

Abstract

We introduce an analytical phase-reconstruction principle that retrieves atomic scale motion via time-domain interferometry. The approach is based on a resonant interaction with high-frequency light and does not require temporal resolution on the time scale of the resonance period. It is thus applicable to hard x rays and γ rays for measurements of extremely small spatial displacements or relative-frequency changes. Here, it is applied to retrieve the temporal phase of a 14.4 keV emission line of an ⁵⁷Fe sample, which corresponds to a spatial translation of this sample. The small wavelength of this transition (λ=0.86 Å) allows for determining the motion of the emitter on sub-Ångström length and nanosecond timescales.