Beam positioning stability analysis on large laser facilities

Abstract Beam positioning stability in a laser-driven inertial confinement fusion (ICF) facility is a vital problem that needs to be fixed. Each laser beam in the facility is transmitted in lots of optics for hundreds of meters, and then targeted in a micro-sized pellet to realize controllable fusio...

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Bibliographic Details
Published inHigh power laser science and engineering Vol. 1; no. 1; pp. 29 - 35
Main Authors Liu, Fang, Liu, Zhigang, Zheng, Liunian, Huang, Hongbiao, Zhu, Jianqiang
Format Journal Article
LanguageEnglish
Published Cambridge University Press 10.03.2013
Subjects
beam propagation
beam stability
laser optics
sensitivity
vibration
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Summary:Abstract Beam positioning stability in a laser-driven inertial confinement fusion (ICF) facility is a vital problem that needs to be fixed. Each laser beam in the facility is transmitted in lots of optics for hundreds of meters, and then targeted in a micro-sized pellet to realize controllable fusion. Any turbulence in the environment in such long-distance propagation would affect the displacement of optics and further result in beam focusing and positioning errors. This study concluded that the errors on each of the optics contributed to the target, and it presents an efficient method of enhancing the beam stability by eliminating errors on error-sensitive optics. Optimizations of the optical system and mechanical supporting structures are also presented.
ISSN:2095-4719
2052-3289
DOI:10.1017/hpl.2013.7