Femtosecond x-ray measurement of ultrafast melting and large acoustic transients

Time-resolved x-ray diffraction with ultrashort ( approximately 300 fs), multi-keV x-ray pulses has been used to study the femtosecond laser-induced solid-to-liquid phase transition in a thin crystalline layer of germanium. Nonthermal melting is observed to take place within 300-500 fs. Following ul...

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Bibliographic Details
Published in:Physical review letters 2001-11, Vol.87 (22), p.225701-225701, Article 225701
Main Authors: Sokolowski-Tinten, K, Blome, C, Dietrich, C, Tarasevitch, A, Horn von Hoegen, M, von der Linde, D, Cavalleri, A, Squier, J, Kammler, M
Format: Article
Language:English
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Summary:Time-resolved x-ray diffraction with ultrashort ( approximately 300 fs), multi-keV x-ray pulses has been used to study the femtosecond laser-induced solid-to-liquid phase transition in a thin crystalline layer of germanium. Nonthermal melting is observed to take place within 300-500 fs. Following ultrafast melting we observe strong acoustic perturbations evolving on a picosecond time scale.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.87.225701