1. Tunable sub-luminal propagation of narrowband x-ray pulses
- Author
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Heeg, K. P., Haber, J., Schumacher, D., Bocklage, L., Wille, H. -C., Schulze, K. S., Loetzsch, R., Uschmann, I., Paulus, G. G., Rüffer, R., Röhlsberger, R., and Evers, J.
- Subjects
Quantum Physics ,Physics - Atomic Physics - Abstract
Group velocity control is demonstrated for x-ray photons of 14.4 keV energy via a direct measurement of the temporal delay imposed on spectrally narrow x-ray pulses. Sub-luminal light propagation is achieved by inducing a steep positive linear dispersion in the optical response of ${}^{57}$Fe M\"ossbauer nuclei embedded in a thin film planar x-ray cavity. The direct detection of the temporal pulse delay is enabled by generating frequency-tunable spectrally narrow x-ray pulses from broadband pulsed synchrotron radiation. Our theoretical model is in good agreement with the experimental data., Comment: 8 pages, 4 figures
- Published
- 2014
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