A modulated submillimeter-laser polarimeter for the measurement of the Faraday rotation by a plasma
- 1 February 1979
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 34 (3), 218-220
- https://doi.org/10.1063/1.90736
Abstract
To determine current‐density profiles in toroidal plasmas, a submillimeter‐laser polarimeter was fabricated and its perfomance assessed. Measurements of simulated plasma Faraday rotations demonstrated a sensitivity of 26 mV/mrad for an optically pumped 4‐mW 393‐μm far‐infrared (FIR) laser and a polarization modulation angle of 149 mrad. Time resolution of the order of milliseconds was obtained.Keywords
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