Compact high-speed high-sensitivity second-harmonic interferometer for electron density measurement

Compact high-speed high-sensitivity second-harmonic interferometer for electron density measurement

A second-harmonic interferometer based on a CW Nd:YAG laser is presented. The device is extremely compact and versatile and is developed for line-integrated electron density measurements in large plasma machines. A sensitivity in measuring line-integrated electron density of 4X1013 cm-2 with time re...

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Veröffentlicht in:AIP conference proceedings 2008-01, Vol.988 (1), p.132-135
Hauptverfasser: Brandi, F, Marsili, P, Giammanco, F
Format: Artikel
Sprache:eng
Schlagworte:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTRON DENSITY
HARMONIC GENERATION
INTERFEROMETERS
LASER RADIATION
NEODYMIUM LASERS
PLASMA
PLASMA DIAGNOSTICS
SENSITIVITY
TIME RESOLUTION
VELOCITY
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Zusammenfassung:A second-harmonic interferometer based on a CW Nd:YAG laser is presented. The device is extremely compact and versatile and is developed for line-integrated electron density measurements in large plasma machines. A sensitivity in measuring line-integrated electron density of 4X1013 cm-2 with time resolution of 8 mus, and 1013 cm-2 with time resolution of 50 mus, is demonstrated.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.2905054