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Title: Shaping of pulses in optical grating-based laser systems for optimal control of electrons in laser plasma wake-field accelerator

Abstract

In typical chirped pulse amplification (CPA) laser systems, scanning the grating separation in the optical compressor causes the well know generation of linear chirp of frequency vs. time in a laser pulse, as well as a modification of all the higher order phase terms. By setting the compressor angle slightly different from the optimum value to generate the shortest pulse, a typical scan around this value will produce significant changes to the pulse shape. Such pulse shape changes can lead to significant differences in the interaction with plasmas such as used in laser wake-field accelerators. Strong electron yield dependence on laser pulse shape in laser plasma wake-field electron acceleration experiments have been observed in the L'OASIS Lab of LBNL [1]. These experiments show the importance of pulse skewness parameter, S, defined here on the basis of the ratio of the ''head-width-half-max'' (HWHM) and the ''tail-width-halfmax'' (TWHM), respectively.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Director, Office of Science. High Energy Physics (US)
OSTI Identifier:
815489
Report Number(s):
LBNL-51819
R&D Project: 455401; TRN: US0304625
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Conference
Resource Relation:
Conference: 2003 Particle Accelerator Conference, Portland, OR (US), 05/12/2003--05/16/2003; Other Information: PBD: 1 May 2003
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATION; ACCELERATORS; AMPLIFICATION; ASYMMETRY; COMPRESSORS; DISTRIBUTION; ELECTRONS; LASERS; MODIFICATIONS; OPTIMAL CONTROL; SHAPE; STATISTICS; WAKEFIELD ACCELERATORS; LASER PLASMA WAKEFIELD ACCELERATOR

Citation Formats

Toth, Cs, Faure, J, Geddes, C G.R., van Tilborg, J, and Leemans, W P. Shaping of pulses in optical grating-based laser systems for optimal control of electrons in laser plasma wake-field accelerator. United States: N. p., 2003. Web.
Toth, Cs, Faure, J, Geddes, C G.R., van Tilborg, J, & Leemans, W P. Shaping of pulses in optical grating-based laser systems for optimal control of electrons in laser plasma wake-field accelerator. United States.
Toth, Cs, Faure, J, Geddes, C G.R., van Tilborg, J, and Leemans, W P. Thu . "Shaping of pulses in optical grating-based laser systems for optimal control of electrons in laser plasma wake-field accelerator". United States. https://www.osti.gov/servlets/purl/815489.
@article{osti_815489,
title = {Shaping of pulses in optical grating-based laser systems for optimal control of electrons in laser plasma wake-field accelerator},
author = {Toth, Cs and Faure, J and Geddes, C G.R. and van Tilborg, J and Leemans, W P},
abstractNote = {In typical chirped pulse amplification (CPA) laser systems, scanning the grating separation in the optical compressor causes the well know generation of linear chirp of frequency vs. time in a laser pulse, as well as a modification of all the higher order phase terms. By setting the compressor angle slightly different from the optimum value to generate the shortest pulse, a typical scan around this value will produce significant changes to the pulse shape. Such pulse shape changes can lead to significant differences in the interaction with plasmas such as used in laser wake-field accelerators. Strong electron yield dependence on laser pulse shape in laser plasma wake-field electron acceleration experiments have been observed in the L'OASIS Lab of LBNL [1]. These experiments show the importance of pulse skewness parameter, S, defined here on the basis of the ratio of the ''head-width-half-max'' (HWHM) and the ''tail-width-halfmax'' (TWHM), respectively.},
doi = {},
url = {https://www.osti.gov/biblio/815489}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {5}
}

Conference:
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