Development of two color laser diagnostics for the ITER poloidal polarimeter

Two color laser diagnostics using terahertz laser sources are under development for a high performance operation of the Large Helical Device and for future fusion devices such as ITER. So far, we have achieved high power laser oscillation lines simultaneously oscillating at 57.2 and 47.7   μ m by us...

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Bibliographic Details
Published in:Review of scientific instruments 2010-10, Vol.81 (10), p.10D537-10D537-4
Main Authors: Kawahata, K., Akiyama, T., Tanaka, K., Nakayama, K., Okajima, S.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COLOR
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
INTERFEROMETERS
ITER TOKAMAK
LASERS
LHD DEVICE
LIGHT TRANSMISSION
OPTICAL PUMPING
OSCILLATIONS
POLARIMETERS
THZ RANGE
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Summary:Two color laser diagnostics using terahertz laser sources are under development for a high performance operation of the Large Helical Device and for future fusion devices such as ITER. So far, we have achieved high power laser oscillation lines simultaneously oscillating at 57.2 and 47.7   μ m by using a twin optically pumped CH 3 OD laser, and confirmed the original function, compensation of mechanical vibration, of the two color laser interferometer. In this article, application of the two color laser diagnostics to the ITER poloidal polarimeter and recent hardware developments will be described.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.3479119