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Abstract

A phase contrast apparatus using a 20 cm diameter CO-2 CW laser beam designed for the observation of a broad spectrum of density fluctuations in TCA is nearing completion. The instrument produces an image of the plasma that is probed by a photovoltaic detector and reveals small relative phase shifts. It has been experimentally shown to be equivalent in performance to an interferometer for wavelengths ranging from less than 2 mm to more than 10 cm, with the advantage of being compact, lightweight and less sensitive to mechanical perturbations.

Additional information

Authors: WEISEN H CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND), CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND)
Bibliographic Reference: 1984 INTERNATIONAL CONFERENCE ON PLASMA PHYSICS, CRPP/EPFL, LAUSANNE (SWITZERLAND), JUNE 27-JULY 3, 1984 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 31625 ORA
Availability: Can be ordered online
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