A single-shot spatial chirp method for measuring initial AC conductivity evolution of femtosecond laser pulse excited warm dense matter

To study the rapid evolution of ACconductivity from ultrafast laser excited warm dense matter(WDM), aspatialchirp single-shot method is developed utilizing a crossing angle pump-probe configuration. The pump beam is shaped individually in twospatial dimensions so that it can provide both sufficient laser intensity to excite the material to warm dense matter state and a uniform time window of up to 1 ps with sub-100 fs FWHM temporal resolution. Temporal evolution of ACconductivity in laser excited warm densegold was alsomeasured.

Source: Review of Scientific Instruments - September 19, 2016 Category: Physics Authors: Z. Chen, P. Hering, S. B. Brown, C. Curry, Y. Y. Tsui and S. H. Glenzer Source Type: research