Ultrafast Self-Induced X-Ray Transparency and Loss of Magnetic Diffraction

Using ultrafast ≃2.5  fs and ≃25  fs self-amplified spontaneous emission pulses of increasing intensity and a novel experimental scheme, we report the concurrent increase of stimulated emission in the forward direction and loss of out-of-beam diffraction contrast for a Co/Pd multilayer sample. The e...

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Bibliographic Details
Published in:Physical review letters 2018-09, Vol.121 (13), p.137403-137403, Article 137403
Main Authors: Chen, Z, Higley, D J, Beye, M, Hantschmann, M, Mehta, V, Hellwig, O, Mitra, A, Bonetti, S, Bucher, M, Carron, S, Chase, T, Jal, E, Kukreja, R, Liu, T, Reid, A H, Dakovski, G L, Föhlisch, A, Schlotter, W F, Dürr, H A, Stöhr, J
Format: Article
Language:English
Subjects:
Cobalt
Condensed Matter
Dependence
Materials Science
Multilayers
Physics
Spontaneous emission
Stimulated emission
Vibration
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Summary:Using ultrafast ≃2.5  fs and ≃25  fs self-amplified spontaneous emission pulses of increasing intensity and a novel experimental scheme, we report the concurrent increase of stimulated emission in the forward direction and loss of out-of-beam diffraction contrast for a Co/Pd multilayer sample. The experimental results are quantitatively accounted for by a statistical description of the pulses in conjunction with the optical Bloch equations. The dependence of the stimulated sample response on the incident intensity, coherence time, and energy jitter of the employed pulses reveals the importance of increased control of x-ray free electron laser radiation.
ISSN:0031-9007
1079-7114
1079-7114
DOI:10.1103/physrevlett.121.137403