  We study the accelerated motion of mirrors and the photonic Unruh effect. The
solutions of Maxwell's equations with appropriate boundary conditions in
Rindler coordinates are found. The canonical quantization of the field is
carried out properly. Important consequences arise from the presence of mirrors
or polarizers. It is shown that a single reflective surface produces frequency
quantization due to Dirichlet conditions applied to the $-1/(\alpha x)^2$
anomalous potential for non-inertial observers. The number of photons per
accelerated mode is estimated via Hankel functions.
