Sum-frequency ionic Raman scattering

Dominik M. Juraschek*, Sebastian F. Maehrlein

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

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.

Original languageEnglish
Article number174302
JournalPhysical Review B
Volume97
Issue number17
DOIs
StatePublished - 16 May 2018
Externally publishedYes

Funding

FundersFunder number
ERC-H2020
Office of Naval Research01-N00014-18-1-2080
Horizon 2020 Framework Programme681917
Eidgenössische Technische Hochschule Zürich

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