Nonlinear phononics: Ionic raman scattering effect
Over the past decades nonlinear photonics have revolutionized the generation and manipulation of light; changing its color at high intensities is just one of many prominent examples. In this study we have demonstrated an analogous effect for vibrational modes in crystal lattices. High-amplitude coherent excitation of a distinct phonon mode led to the generation of a lower-frequency coherent phonon mode driven through nonlinearities of the crystal lattice.
|Through Ionic Raman Scattering, a nonlinear effect of the crystal lattice, high-amplitude coherent excitation of a distinct phonon mode leads to the generation of lower-frequency coherent phonon modes.||
|Nonlinear phononics as a new ultrafast route to lattice control|
|M. Först, C. Manzoni, S. Kaiser, Y. Tomioka, Y. Tokura, R. Merlin and A. Cavalleri|
|Nature Physics, 7, 854–856 (2011).|
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