Time-resolved evolution of laser-induced periodic surface structure on germanium
- 15 January 1983
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 27 (2) , 1424-1427
- https://doi.org/10.1103/physrevb.27.1424
Abstract
We have time resolved the reflection and diffraction of a probe beam from germanium during creation of periodic surface structure by a 20-ns, 1.06-μm laser pulse. Large, transient diffracted signals typically precede the development of permanent structure while the maximum reflectivity is much less than the melt value. We conclude that inhomogeneous melting and resolidification of the surface occurs following the interference of the incident beam and a nonradiative electromagnetic field.Keywords
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