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arXiv · 1104.0891

Negative group velocity and three-wave mixing in dielectric crystals

Vitaly V. Slabko·Sergey A. Myslivets·Mikhail I. Shalaev·Alexander K. Popov
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Abstract

Extraordinary features of optical parametric amplification of Stokes electromagnetic waves are investigated, which originate from three-wave mixing of two ordinary electromagnetic and one backward phonon wave with negative group velocity. A similarity with the counterpart in the negative-index plasmonic metamaterials and differences with those utilizing contra-propagating ordinary electromagnetic waves as well as electromagnetic and acoustic phonon waves are shown. They stem from backwardness of optical phonons with negative dispersion. Nonlinear-optical photonic devices with the properties similar to those predicted for the negative-index metamaterials are proposed.

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Vitaly V. Slabko, Sergey A. Myslivets, Mikhail I. Shalaev, Alexander K. Popov. 2011-04-05. Negative group velocity and three-wave mixing in dielectric crystals. https://doi.org/10.1364/ol.36.003861

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