ABSTRACT

Recent studies on electromagnetic wave interaction with bounded relativistic plasmas have generally neglected oblique incidence and the results have been limited to the case of normal incidence. In a previous article [1], the reflection and transmission of electromagnetic waves obliquely incident on a relativistically moving uniaxial plasma slab was studied, bringing out the nature of oscillations in the reflection coefficient against the normalized slab velocity. The problem was solved in the rest system of the slab and it was seen that as the slab recedes from the incident wave, the angle of reflection as viewed from the observer’s frame turns out to be 90° for some critical slab velocity, thus explaining the zero reflected power at this velocity. This is in agreement with Yeh’s finding [2] for the dielectric half-space moving normal to the interface. However, his observation that beyond this critical point the reflected wave is evanescent seems to be incorrect.