In-situ diagnostic of femtosecond laser probe pulses for high resolution ultrafast imaging.

ABSTRACT: Ultrafast imaging is essential in physics and chemistry to investigate the femtosecond dynamics of nonuniform samples or of phenomena with strong spatial variations. It relies on observing the phenomena induced by an ultrashort laser pump pulse using an ultrashort probe pulse at a later time. Recent years have seen the emergence of very successful ultrafast imaging techniques of single non-reproducible events with extremely high frame rate, based on wavelength or spatial frequency encoding. However, further progress in ultrafast imaging towards high spatial resolution is hampered by the lack of characterization of weak probe beams. For pump-probe experiments realized within solids or liquids, because of the difference in group velocities between pump and probe, the determination of the abs

SUBMITTER: Xie C 

PROVIDER: S-EPMC8209123 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature