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Updated: Aug 13, 2026

Direct Imaging of Laser-driven Ultrafast Molecular Rotation
Published on: February 4, 2017
Coherent control of pump-probe signals of helical structures by adaptive pulse polarizations
Dmitri Voronine1, Darius Abramavicius, Shaul Mukamel
1Department of Chemistry, University of California, Irvine, California 92697-2025, USA.
Abstract:
The simplification of the pump-probe spectrum of excitons by pure-phase-polarization pulse shaping is investigated by a simulation study. The state of light is manipulated by varying the phases of two perpendicular polarization components of the pump, holding its total spectral and temporal intensity profiles fixed. Genetic and iterative Fourier transform algorithms are used to search for pulse phase functions that optimize the ratio of the signal at two frequencies. New features are extracted from the congested pump-probe spectrum of a helical pentamer by selecting a combination of Liouville space pathways. Tensor components which dominate the optimized spectra are identified.
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