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This work presents a novel approach to investigate coherent dynamics in condensed matter materials by means of ultrafast noncollinear multidimensional spectroscopy in the mid infrared with high spatio-temporal resolution. High-order nonlinear wave-mixing processes with background-free and field resolved detection allow to analyze the shape and time evolution of signals in time or frequency domain, demonstrated with bulk indium antimonide, thin-film graphite, and a high-temperature cuprate superconductor. The experiments show high potential to deepen our understanding of (strong) electronic correlations and quasi-particle dynamics in such materials that lead to exciting phenomena from the complex refractive index to high-temperature superconductivity.
Jonas Allerbeck,Thomas Deckert, andDaniele Brida
"Coherent dynamics in condensed matter systems studied by mid-infrared multidimensional spectroscopy", Proc. SPIE 11684, Ultrafast Phenomena and Nanophotonics XXV, 1168411 (5 March 2021); https://doi.org/10.1117/12.2579397
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Jonas Allerbeck, Thomas Deckert, Daniele Brida, "Coherent dynamics in condensed matter systems studied by mid-infrared multidimensional spectroscopy," Proc. SPIE 11684, Ultrafast Phenomena and Nanophotonics XXV, 1168411 (5 March 2021); https://doi.org/10.1117/12.2579397