Compact high-speed high-sensitivity second-harmonic interferometer for electron density measurement
Authors: Brandi F., Marsili P., Giammanco F.
Autors Affiliation: Physics Department, University of Pisa, Largo Bruno Pontecorvo 3, 56127 Pisa, Italy
Abstract: 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 4 x 10(13) cm(-2) with time resolution of 8 mu s, and 10(13) cm(-2) with time resolution of 50 mu s, is demonstrated.
More Information: – \”Piero Caldirola\” Int. Centre for the Promotion of Science; Plasma Physics Institute of the National Research Council; ENEAKeyWords: Electron density; Second-harmonic interferometer