Bandwidth-Activated Anharmonic Coupling

Megan F. Nielson,Lauren M. Davis,Aldair Alejandro,Brittany Knighton,Claire Rader,Jeremy A. Johnson

2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)（2023）

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摘要

We examine nonlinear excitation pathways of CdWO4 using two-dimensional terahertz (THz) spectroscopy. We identify two anharmonic couplings occurring within the crystal and create a framework for identifying couplings in other crystalline materials. We use modeling to show that the THz bandwidth itself can activate otherwise inefficient anharmonic couplings.

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关键词

bandwidth-activated anharmonic coupling,CdWO4/ss,crystalline material,nonlinear excitation,THz bandwidth,two-dimensional terahertz spectra

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