2024
DOI: 10.1103/physrevresearch.6.013103
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Local enhancement in transient absorption spectroscopy by gating the resonance in the time domain

Yu He,
Christian Ott,
Thomas Pfeifer
et al.

Abstract: The concept of resonant perfect absorption, enabled by the combined action of pulse propagation and an auxiliary gate pulse, was recently proposed and demonstrated in a group of two-level systems [Y. He , ]. Here we exploit this method in a more realistic scenario by solving the coupled time-dependent Schrödinger equation and the Maxwell wave equation in helium. Through emptying the population of the 1s2p excited state after its excitation, we explore the evolution of the spectral profile with time delay and … Show more

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