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Sum-frequency ionic Raman scattering
DOI:10.1103/PhysRevB.97.174302.png)
Abstract
En 中文
In a recent report, sum-frequency excitation of a Raman-active phonon was experimentally demonstrated. This mechanism is the sibling of impulsive stimulated Raman scattering, in which the difference-frequency components of a light field excite a Raman-active mode. Here, we propose that also ionic Raman scattering analogously has a sum-frequency counterpart. We compare the four Raman mechanisms, photonic and ionic difference- and sum-frequency excitation, for three different example materials using a generalized oscillator model for which we calculate the parameters with density functional theory. Sum-frequency ionic Raman scattering completes the toolkit for controlling material properties by means of selective excitation of lattice vibrations.
Keywords:
LIGHT-INDUCED SUPERCONDUCTIVITY
TOTAL-ENERGY CALCULATIONS
COHERENT
PHASE
GENERATION
1ST-ORDER
CRYSTAL
PHONONS
MATTER
PULSES
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Journal
IF:
3.7
Papers:
15.4W
Citations:
41.0W
Organization
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