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Laser-Induced Transient Structural Changes in Ag(111) Studied by Time Resolved X-ray Diffraction

Published online by Cambridge University Press:  10 April 2013

Ali Oguz Er ,
Jie Chen  and
Peter M. Rentzepis
Ali Oguz Er*
Affiliation:
Department of Chemistry, University of California, Irvine, CA 92697
Jie Chen
Affiliation:
Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China
Peter M. Rentzepis
Affiliation:
Department of Chemistry, University of California, Irvine, CA 92697
*
*Email: aer@uci.edu
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Abstract

The transient lattice changes on the Ag(111) crystal due to acoustic wave propagation after excitation with femtosecond pulses was studied by means of time resolved X-ray diffraction. The lattice disorder after UV irradiation is detected by changes of the XRD rocking curve shift, broadening, and total diffraction intensity as a function of time. We have observed a blast force formed within two picoseconds after fs UV irradiation. Experimental results show an initial lattice contraction followed by lattice expansion that propagates with sound velocity.

Keywords

acousticx-ray diffraction (XRD)thin film

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Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1526: Symposium TT – Defects and Microstructure Complexity in Materials , 2013 , mrsf12-1526-tt05-01
Copyright
Copyright © Materials Research Society 2013

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References

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