Study of Transient Phonon Dynamics.
Final rept. 1 Jul 83-30 Jun 86,
INDIANA UNIV AT BLOOMINGTON DEPT OF PHYSICS
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The research program during the past three year grant period has been quite successful in devising new, and adapting existing, laser based techniques to the study of short and ultra-short duration laser induced transient dynamics. For the most part, work has concentrated on the dynamics of excited, nonequilibrium phonon distributions in semiconductors and in ionic solids. The excitation brings the solids well away from thermal equilibrium. It has been the authors contention that phonon dynamics and phonon transport can be investigated in greater detail by nonequilibrium techniques than by thermal equilibrium techniques as, e.g., thermal conductivity measurements. The results obtained so far offer an excellent opportunity for the expansion of existing methods and facilities to new areas of research. Keywords Transient Phonon Dynamics Lasers Ionic Solids Phonon Dynamics and Phonon Transport.
- Electricity and Magnetism
- Solid State Physics