HHG in liquids

Contrary to high harmonic generation (HHG) from the gas phase that is extremely well understood (discovered in the 1970's-80’s and received the 2023 Nobel Prize), and HHG from solids which was very heavily investigated in the last decade, HHG from liquids was only recently measured. We are exploring this fundamental physical phenomenon by developing ab-initio methodologies for performing calculations, and formulating semi-classical models for the light-driven electron dynamics. We aim at developing HHG-spectroscopy based techniques for various chemical and physical properties of liquids and solution.

Relevant publications:

Mondal, Waser, Balciunas, Neufeld, Yin, Tancogne-Dejean, Rubio, Wörner, “High-harmonic generation in liquids with few-cycle pulses: effect of laser-pulse duration on the cut-off energy”, Opt. Express 31, 34348-34361 (2023).
Mondal*, Neufeld*, Yin*, Nourbakhsh*, Svoboda*, Rubio, Tancogne-Dejean, Wörner, “High harmonic spectroscopy of low-energy electron-scattering dynamics in liquids”, Nat. Phys. 9, 1813-1820 (2023).
Neufeld, Nourbakhsh, Tancogne-Dejean, Rubio, “Ab-initio cluster approach for high-harmonic generation in liquids”, J. Chem. Theory Comput. 18, 4117-4126 (2022), Cover Paper.