Abstract
AbstractExtrinsic semiconductors have three charged species, and hence satisfy the requirement for polarization reversal of the two electromagnetic wave modes. This effect is investigated by using cold plasma wave theory in the limit of small collision frequencies. It is shown that polarization reversal is possible for frequencies less than the hole cyclotron frequency in n‐type materials, and for frequencies above the electron cyclotron frequency in p‐type materials, when the angle between the magnetic field and the wave vector exceeds a certain critical value. For this angle the modes are critically coupled. As a particular example for application an n‐InSb sample is considered.
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