Plasma and Fusion Research
Online ISSN : 1880-6821
ISSN-L : 1880-6821
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Coaxial Multiple Laser Beam Combiner for the LHD Thomson Scattering System
Ryo YASUHARAIchihiro YAMADAKazumichi NARIHARAHisamichi FUNABAHiroshi HAYASHI
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2012 Volume 7 Pages 2402030

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Abstract

We developed a polarization-based beam-combining method for multiple lasers to improve the time resolution and accuracy of a large helical device (LHD) Thomson scattering system. We combined two or more beams from different apertures of the laser heads in series into a coaxial beam line with the use of polarization optics. We have implemented this beam-combining method in an LHD Thomson scattering system from the 15th experimental campaign. We also propose a method of combining three or more laser beams by the use of a Pockels cell.

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© 2012 by The Japan Society of Plasma Science and Nuclear Fusion Research
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