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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

An angular-resolved scattered-light diagnostic for laser-plasma instability studies.

X Zhao¹, X H Yuan¹, J Zheng¹

¹Key Laboratory for Laser Plasmas (MoE) and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.

The Review of Scientific Instruments

|June 1, 2022

Summary

This summary is machine-generated.

A new diagnostic tool, the angular-resolved scattered-light diagnostic station (ARSDS), enables simultaneous multi-angle study of laser-plasma instabilities (LPIs). This advancement is crucial for understanding LPIs like stimulated Raman scattering due to their angular dependence.

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Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry

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Published on: August 1, 2017

Area of Science:

Plasma Physics
Laser-Plasma Interactions
Spectroscopy

Background:

Laser-plasma instabilities (LPIs) are fundamental to inertial confinement fusion (ICF) research.
Understanding LPIs requires detailed characterization of scattered light.
Existing diagnostics often lack multi-angle capabilities in a single shot.

Purpose of the Study:

To develop and implement an advanced diagnostic for studying LPIs.
To enable simultaneous, angular-resolved measurements of scattered light in a single laser shot.
To investigate the angular dependence of LPIs in ICF experiments.

Main Methods:

Development of an angular-resolved scattered-light diagnostic station (ARSDS).
Utilizing an array of fibers for angular sampling of scattered light.
Employing imaging, streaked, and fiber-optic spectrometers for spectral analysis (time-integrated/time-resolved).

Main Results:

Successful implementation of the ARSDS at the Shenguang-II Upgrade laser facility.
Demonstrated capability for simultaneous multi-angle scattered light detection.
Preliminary data highlights the angular dependence of LPIs, including stimulated Raman scattering.

Conclusions:

The ARSDS is a valuable tool for advancing LPI research.
Angular-resolved detection is essential for a comprehensive understanding of LPIs.
The diagnostic's flexibility allows for various spectral analysis configurations.