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Understanding Nonlinear Phononic Processes with Two- Dimensional Spectroscopy

Megan F. Nielson, Brittany E. Knighton, Lauren Davis, Aldair Alejandro, Emma Nelson, and Jeremy A. Johnson

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Abstract

Two-dimensional (2D) THz spectroscopy can reveal information about nonlinear energy transfer in solids. Experimental power dependent measurements can help determine the order of nonlinear mechanism. We used first-principles calculations to calculate anharmonic coupling constants for vibrational modes in beta-barium borate and compared with the recorded nonlinear 2D spectrum.

© 2021 The Author(s)

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