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Optical Tuning of Second-Order Optical Nonlinearity in Transition Metal Dichalcogenides

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Abstract

We show that the optical depopulation of conduction band electrons, close to high- symmetry K/K’ points, modulates the contribution of interband electronic transitions in the second-order dielectric susceptibility of transition metal dichalcogenides, enabling ultrafast timing of nonlinear processes.

© 2020 The Author(s)

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