Femtosecond, two-dimensional spatial Doppler mapping of ultraintense laser-solid target interaction

Kamalesh Jana,G. Ravindra Kumar,J. Pasley,Amit D. Lad,A. P. L. Robinson,Chris Underwood,Will Trickey,Yash M. Ved,David West

doi:10.1103/physrevresearch.3.033034

Abstract

We present measurements of the spatiotemporal evolution of a hot-dense plasma generated by the interaction of an intense 25 fs laser pulse with a solid target, using pump-probe two-dimensional (2D) Doppler spectrometry. Measuring the time-dependent Doppler shifts at different positions across the probe beam, we achieve velocity mapping at hundreds of femtoseconds time resolution simultaneously with a few micrometer spatial resolution across the transverse length of the plasma. Simulations of the interaction using a combination of 2D particle-in-cell and 2D radiation hydrodynamics codes agree well with the experiment.

Highlights

We present measurements of the spatiotemporal evolution of a hot-dense plasma generated by the interaction of an intense 25 fs laser pulse with a solid target, using pump-probe two-dimensional (2D) Doppler spectrometry
Ultraintense, femtosecond laser irradiation of a solid produces a dense, hot plasma that has emerged as a test bed for a wide range of phenomena ranging from basic plasma physics through to complex laser-plasma interactions and table-top approximations to astrophysical systems [1,2,3]
The hydrodynamics induced by a high-intensity short-pulse laser when it interacts with a solid target evolves on subpicosecond timescales

Summary

Introduction

Ultraintense, femtosecond laser irradiation of a solid produces a dense, hot plasma that has emerged as a test bed for a wide range of phenomena ranging from basic plasma physics through to complex laser-plasma interactions and table-top approximations to astrophysical systems [1,2,3]. Femtosecond, two-dimensional spatial Doppler mapping of ultraintense laser-solid target interaction We present measurements of the spatiotemporal evolution of a hot-dense plasma generated by the interaction of an intense 25 fs laser pulse with a solid target, using pump-probe two-dimensional (2D) Doppler spectrometry.

Results

Conclusion