Abstract
The concept of “parametrically induced transparency” (PIT) is introduced: a variant of electromagnetically induced transparency (EIT) in inhomogeneous media, in which the EIT regime takes place in only a limited spatial region in which the signal wave is scattered into a transporting wave by a high power drive wave. It is shown how PIT can be employed for the extraction of radiation from the core of overdense toroidal plasmas. Numerical examples are given for the TEXTOR (Torus Experiment for Technology Oriented Research) tokamak [U. Samm, Fusion Sci. Technol. 47, 73 (2005), Special Issue on TEXTOR], which use the existing gyrotron as the high power drive source.
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