Stochastic homogenization of the laser intensity to improve the irradiation uniformity of capsules directly driven by thousands laser beams

Temporal, Mauro and Canaud, B. (2011). Stochastic homogenization of the laser intensity to improve the irradiation uniformity of capsules directly driven by thousands laser beams. "European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics", v. 65 (n. 3); pp. 1-5. ISSN 1434-6060. https://doi.org/10.1140/epjd/e2011-20366-x.

Description

Title: Stochastic homogenization of the laser intensity to improve the irradiation uniformity of capsules directly driven by thousands laser beams
Author/s:
  • Temporal, Mauro
  • Canaud, B.
Item Type: Article
Título de Revista/Publicación: European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics
Date: 2011
ISSN: 1434-6060
Volume: 65
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Física Aplicada a la Ingeniería Aeronáutica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Illumination uniformity of a spherical capsule directly driven by laser beams has been assessed numerically. Laser facilities characterized by ND = 12, 20, 24, 32, 48 and 60 directions of irradiation with associated a single laser beam or a bundle of NB laser beams have been considered. The laser beam intensity profile is assumed super-Gaussian and the calculations take into account beam imperfections as power imbalance and pointing errors. The optimum laser intensity profile, which minimizes the root-mean-square deviation of the capsule illumination, depends on the values of the beam imperfections. Assuming that the NB beams are statistically independents is found that they provide a stochastic homogenization of the laser intensity associated to the whole bundle, reducing the errors associated to the whole bundle by the factor  , which in turn improves the illumination uniformity of the capsule. Moreover, it is found that the uniformity of the irradiation is almost the same for all facilities and only depends on the total number of laser beams Ntot = ND × NB.

More information

Item ID: 12069
DC Identifier: http://oa.upm.es/12069/
OAI Identifier: oai:oa.upm.es:12069
DOI: 10.1140/epjd/e2011-20366-x
Official URL: http://www.springerlink.com/content/fp21rk7nx7722858/?MUD=MP
Deposited by: Memoria Investigacion
Deposited on: 18 Sep 2012 12:16
Last Modified: 21 Apr 2016 11:14
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