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Title: Filtering higher-order laser modes using leaky plasma channels

Abstract

In this paper, plasma structures based on leaky channels are proposed to filter higher-order laser mode content. The evolution and propagation of non-Gaussian laser pulses in leaky channels are studied, and it is shown that, for appropriate laser-plasma parameters, the higher-order laser mode content of the pulse may be removed while the fundamental mode remains well-guided. The behavior of multi-mode laser pulses is described analytically and numerically using envelope equations, including the derivation of the leakage coefficients, and compared to particle-in-cell simulations. Finally, laser pulse propagation, with reduced higher-order mode content, improves guiding in parabolic plasma channels, enabling extended interaction lengths for laser-plasma accelerator applications.

Authors:
 [1];  [2];  [2];  [2];  [1]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Berkeley Lab Laser Accelerator (BELLA) Center
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Berkeley Lab Laser Accelerator (BELLA) Center
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); National Science Foundation (NSF)
OSTI Identifier:
1461979
Alternate Identifier(s):
OSTI ID: 1415330
Grant/Contract Number:  
AC02-05CH11231; PHY-1632796
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 25; Journal Issue: 1; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; laser plasma interactions; probability theory; semiclassical theories; differential equations; energy content; particle acceleration; particle-in-cell method; combustion

Citation Formats

Djordjevic, B. Z., Benedetti, C., Schroeder, C. B., Esarey, E., and Leemans, W. P. Filtering higher-order laser modes using leaky plasma channels. United States: N. p., 2018. Web. doi:10.1063/1.5006198.
Djordjevic, B. Z., Benedetti, C., Schroeder, C. B., Esarey, E., & Leemans, W. P. Filtering higher-order laser modes using leaky plasma channels. United States. doi:10.1063/1.5006198.
Djordjevic, B. Z., Benedetti, C., Schroeder, C. B., Esarey, E., and Leemans, W. P. Tue . "Filtering higher-order laser modes using leaky plasma channels". United States. doi:10.1063/1.5006198. https://www.osti.gov/servlets/purl/1461979.
@article{osti_1461979,
title = {Filtering higher-order laser modes using leaky plasma channels},
author = {Djordjevic, B. Z. and Benedetti, C. and Schroeder, C. B. and Esarey, E. and Leemans, W. P.},
abstractNote = {In this paper, plasma structures based on leaky channels are proposed to filter higher-order laser mode content. The evolution and propagation of non-Gaussian laser pulses in leaky channels are studied, and it is shown that, for appropriate laser-plasma parameters, the higher-order laser mode content of the pulse may be removed while the fundamental mode remains well-guided. The behavior of multi-mode laser pulses is described analytically and numerically using envelope equations, including the derivation of the leakage coefficients, and compared to particle-in-cell simulations. Finally, laser pulse propagation, with reduced higher-order mode content, improves guiding in parabolic plasma channels, enabling extended interaction lengths for laser-plasma accelerator applications.},
doi = {10.1063/1.5006198},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 1,
volume = 25,
place = {United States},
year = {2018},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

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Cited by: 1 work
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Figures / Tables:

FIG. 1 FIG. 1: Comparison of a Gaussian pulse with r0 = 53 μm, a jinc-type profile, and a superposition of three LG modes. For the jinc profile, k ¼= 2:74331 and for the LG3 profile, Σ$^3_{m=1}$ amLm(2r2/r$^2_{LG}$) exp(-r2/r$^2_{LG}$), where the mode amplitudes are a0 = 0.729; a1 = 0.418, and a2more » = -0.146 and the LG3 matched radius is rLG = 1.144r0.« less

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.