Understanding Nonlinear Phononic Processes with TwoDimensional Spectroscopy
conference on lasers and electro optics（2021）
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.
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Key words
nonlinear energy transfer,experimental power dependent measurements,nonlinear mechanism,first-principles calculations,anharmonic coupling constants,beta-barium borate,recorded nonlinear 2D spectrum,nonlinear phononic processes,TwoDimensional spectroscopy
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