Three-wave interactions of surface defect-deformation waves and their manifestations in the self-organisation of nano- and microstructures in solids exposed to laser radiation
- M. V. Lomonosov Moscow State University, Faculty of Physics, Moscow (Russian Federation)
The self-organisation of the surface-relief nanostructures in solids under the action of energy and particle fluxes is interpreted as the instability of defect-deformation (DD) gratings produced by quasi-static Lamb and Rayleigh waves and defect-concentration waves. The allowance for the nonlocality in the defects-lattice atom interaction with a simultaneous account for both (normal and longitudinal) defect-induced forces bending the surface layer leads to the appearance of two maxima in the dependence of the instability growth rate of DD waves on the wave number. Three-wave interactions of quasi-static coupled DD waves (second harmonic generation and wave vector mixing) are considered for the first time, which are similar to three-wave interactions in nonlinear optics and acoustics and lead to the enrichment of the spectrum of surface-relief harmonics. Computer processing of experimental data on laser-induced generation of micro- and nanostructures of the surface relief reveals the presence of effects responsible for the second harmonic generation and wave vector mixing. (special issue devoted to the 80th birthday of S.A. Akhmanov)
- OSTI ID:
- 21471124
- Journal Information:
- Quantum Electronics (Woodbury, N.Y.), Vol. 39, Issue 7; Other Information: DOI: 10.1070/QE2009v039n07ABEH014118; ISSN 1063-7818
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ACOUSTICS
DEFECTS
EXPERIMENTAL DATA
GRATINGS
HARMONIC GENERATION
INSTABILITY GROWTH RATES
LASER RADIATION
MICROSTRUCTURE
NANOSTRUCTURES
NONLINEAR OPTICS
RADIATION EFFECTS
RAYLEIGH WAVES
SPECTRA
DATA
ELECTROMAGNETIC RADIATION
FREQUENCY MIXING
INFORMATION
NUMERICAL DATA
OPTICS
RADIATIONS