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Related Experiment Video

Updated: Jul 3, 2026

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses

Published on: July 2, 2012

Plasma jets driven by ultraintense-laser interaction with thin foils.

S Kar¹, M Borghesi, S V Bulanov

¹School of Mathematics and Physics, Queen's University, Belfast, BT7 1NN, United Kingdom. s.kar@qub.ac.uk

Physical Review Letters

|July 23, 2008

Summary

Ultraintense laser pulses generate plasma jets from solid targets. These jets expand colimatted for hundreds of picoseconds, featuring steep density gradients, driven by laser radiation pressure.

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Area of Science:

Physics
Plasma Physics
Laser-Plasma Interactions

Background:

Ultraintense lasers interacting with solid targets can produce complex plasma phenomena.
Understanding particle acceleration and plasma dynamics is crucial for inertial confinement fusion and astrophysics.

Purpose of the Study:

To experimentally demonstrate and characterize plasma jets ejected from the rear of laser-irradiated thin solid targets.
To investigate the role of laser radiation pressure in the formation of these plasma jets.

Main Methods:

Experimental measurements using transverse interferometry with high spatial and temporal resolution.
Analytical calculations.
Two-dimensional particle-in-cell (PIC) simulations.

Main Results:

Experimental evidence of collimated plasma jets ejected from the rear side of thin solid targets.
Observed jet expansion lasting for several hundred picoseconds.
Detected steep density gradients at the jet periphery.
Simulations and analytical models highlight the significant role of laser radiation pressure.

Conclusions:

Plasma jets are a significant phenomenon in ultraintense laser-matter interactions.
Laser radiation pressure is a key driver for the formation and collimated expansion of these jets.
The findings provide insights into high-energy-density plasma dynamics.