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Title: The implementation and data analysis of an interferometer for intense short pulse laser experiments

Abstract

We present an interferometry setup and the detailed fringe analysis method for intense short pulse (SP) laser experiments. The interferometry scheme was refined through multiple campaigns to investigate the effects of pre-plasmas on energetic electrons at the Jupiter Laser Facility at Lawrence Livermore National Laboratory. The interferometer used a frequency doubled ($${\it\lambda}=0.527~{\rm\mu}\text{m}$$) 0.5 ps long optical probe beam to measure the pre-plasma density, an invaluable parameter to better understand how varying pre-plasma conditions affect the characteristics of the energetic electrons. The hardware of the diagnostic, data analysis and example data are presented. Here, the diagnostic setup and the analysis procedure can be employed for any other SP laser experiments and interferograms, respectively.

Authors:
 [1];  [2];  [3]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of California, Davis, CA (United States)
  2. Univ. of California, Davis, CA (United States)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1367971
Report Number(s):
LLNL-JRNL-681062
Journal ID: ISSN 2095-4719; applab
Grant/Contract Number:
AC52-07NA27344
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
High Power Laser Science and Engineering
Additional Journal Information:
Journal Volume: 4; Journal ID: ISSN 2095-4719
Publisher:
Cambridge University Press
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 70 PLASMA PHYSICS AND FUSION; 42 ENGINEERING; short pulse laser; optical interferometry; picosecond probe; Mach-Zehnder interferometer; plasma density

Citation Formats

Park, Jaebum, Baldis, Hector A., and Chen, Hui. The implementation and data analysis of an interferometer for intense short pulse laser experiments. United States: N. p., 2016. Web. doi:10.1017/hpl.2016.21.
Park, Jaebum, Baldis, Hector A., & Chen, Hui. The implementation and data analysis of an interferometer for intense short pulse laser experiments. United States. doi:10.1017/hpl.2016.21.
Park, Jaebum, Baldis, Hector A., and Chen, Hui. Wed . "The implementation and data analysis of an interferometer for intense short pulse laser experiments". United States. doi:10.1017/hpl.2016.21. https://www.osti.gov/servlets/purl/1367971.
@article{osti_1367971,
title = {The implementation and data analysis of an interferometer for intense short pulse laser experiments},
author = {Park, Jaebum and Baldis, Hector A. and Chen, Hui},
abstractNote = {We present an interferometry setup and the detailed fringe analysis method for intense short pulse (SP) laser experiments. The interferometry scheme was refined through multiple campaigns to investigate the effects of pre-plasmas on energetic electrons at the Jupiter Laser Facility at Lawrence Livermore National Laboratory. The interferometer used a frequency doubled (${\it\lambda}=0.527~{\rm\mu}\text{m}$) 0.5 ps long optical probe beam to measure the pre-plasma density, an invaluable parameter to better understand how varying pre-plasma conditions affect the characteristics of the energetic electrons. The hardware of the diagnostic, data analysis and example data are presented. Here, the diagnostic setup and the analysis procedure can be employed for any other SP laser experiments and interferograms, respectively.},
doi = {10.1017/hpl.2016.21},
journal = {High Power Laser Science and Engineering},
number = ,
volume = 4,
place = {United States},
year = {Wed Aug 03 00:00:00 EDT 2016},
month = {Wed Aug 03 00:00:00 EDT 2016}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 3works
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  • The basic equations for self-consistent pulse evolution taking into account stimulated Raman backward and near-backward scattering are formulated. These equations are used to study the three-dimensional (3-D) axisymmetrical self-consistent laser pulse evolution analytically and numerically. Special attention is paid to the case of the pulse self-modulation. The spectra and intensity of backscattered radiation are obtained in both the strong and weak coupling limits. A simple criterion to ignore the action of stimulated Raman backscattering on the pulse evolution is derived. The possibility of using a backscattered radiation spectrum for diagnostics of both the laser-pulse and generated wake-field evolution is discussed.more » Triggering of the laser-pulse self-modulation by the relativistic self-focusing and by a second frequency-shifted weak-intensity laser pulse is discussed. Basing on the obtained results, a new configuration of stimulation and maintaining a strong wake-field excitation is proposed. This configuration makes it possible to obtain acceleration of electrons up to giga-electron-volt energies in the field of the excited plasma wave by using the laser technology that is presently available. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.« less
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