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arXiv · 2310.02689

Nonlinear terahertz polarizability of electrons solvated in a polar liquid

Matthias Runge·Klaus Reimann·Michael Woerner·Thomas Elsaesser
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Abstract

The nonlinear polaronic response of electrons solvated in liquid 2-propanol is studied by two-dimensional terahertz spectroscopy. Solvated electrons with a concentration of c$_e \approx$ 800 $\mu$M are generated by femtosecond photoionization of alcohol molecules. Electron relaxation to a localized ground state impulsively excites coherent polaron oscillations with a frequency of 3.9 THz. Off-resonant perturbation of the THz coherence by a pulse centered at 1.5 THz modifies the polaron oscillation phase. This nonlinear change of electron polarizability is reproduced by theoretical calculations.

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Matthias Runge, Klaus Reimann, Michael Woerner, Thomas Elsaesser. 2023-10-04. Nonlinear terahertz polarizability of electrons solvated in a polar liquid. https://arxiv.org/abs/2310.02689

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