Optical microscopy of 3D carpet cloaks:ray-tracing calculations
T. Ergin, J.C. Halimeh, N. Stenger, and M. Wegener
Opt. Express 18, 20535 (2010)
In a recent publication (T. Ergin et al., Science 328, 337 (2010)),
three-dimensional broadband dielectric carpet cloaks have been
fabricated and experimentally characterized by optical bright-field and
dark-field microscopy using unpolarized light from an incandescent lamp.
A direct comparison with theory has not been provided so far. In the
present work, we treat the carpet cloak as well as the entire optical
microscope within the ray-optics approximation and the cloak within the
effective-medium approximation. We find good qualitative agreement
between experimental results and our calculations.