Observation of ultrafast laser-plasma evolution by pump-probe reflectometry and Doppler spectrometry
Abstract
We demonstrate pump-probe techniques, namely the Doppler spectrometry and the reflectometry in detail, which directly capture the time-resolved ultrafast evolution of high intensity femtosecond laser-driven hot, dense plasma. These techniques are capable of capturing ultrafast plasma dynamics on time scales of sub 100 femtosecond. We have shown the dynamics of high intensity femtosecond laser-driven shock like disturbance into the plasma at densities more than 10^22/cc. This can help understanding the physics related to shock ignition, supernova explosion and many other astrophysical scenarios and also can have implications in medicine and chemistry. Furthermore, we have investigated the ultrafast acoustic phenomena due to hydrodynamics inside an expanding hot, dense plasma in its transient phase by the correlated measurements of Doppler spectrometry and reflectometry.
Keywords
Cite
@article{arxiv.1909.05814,
title = {Observation of ultrafast laser-plasma evolution by pump-probe reflectometry and Doppler spectrometry},
author = {Amitava Adak and Prashant Kumar Singh and Amit D. Lad and Gourab Chatterjee and G. Ravindra Kumar},
journal= {arXiv preprint arXiv:1909.05814},
year = {2019}
}