A two-color interferometer using a frequency doubled diode pumped laser for electron density measurements
- 1 January 1999
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 70 (1), 699-702
- https://doi.org/10.1063/1.1149489
Abstract
A new tangentially viewing interferometer has been operated on the Alcator C-Mod tokamak. This system uses both the near infrared and visible beams from a continuous wave, diode pumped, frequency doubled Nd:YAG laser to produce the two wavelengths needed for vibration subtraction. A single Bragg cell driven at two harmonically related frequencies provides the basis for a novel heterodyne detection technique. Comparison of the data from the tangentially viewing interferometer and a vertically viewing CO 2 interferometer will be discussed.Keywords
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