Abstract
We report the results of a study of surface transformations in semiconductors (Si, GaAs) and metals (Cu) produced by 100 ps long pulses from a Nd:YAG laser system. We present and outline the conclusions of our model for growth of spontaneous periodic surface structures or ripples often associated with laser damage and annealing. The effect of repetitive subthreshold illumination is also examined. Theoretical analysis is presented to support time-resolved experiments performed with two excitation pulses at different wavelengths.
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Acknowledgements
We wish to thank Professor Gibbons for bringing some of these problems to our attention two years ago. This work was supported by the Air Force Office of Scientific Research.
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Fauchet, P.M., Guosheng, Z. & Siegman, A.E. Picosecond Laser-Induced Surface Transformations in Solids. MRS Online Proceedings Library 13, 205–210 (1982). https://doi.org/10.1557/PROC-13-205
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DOI: https://doi.org/10.1557/PROC-13-205