Tunnelling transit time for a frustrated total internal reflection in a
double-prism experiment was measured using microwave radiation. We have found
that the transit time is of the same order of magnitude as the corresponding
transit time measured either in an undersized waveguide (evanescent modes) or
in a photonic lattice. Moreover we have established that in all such
experiments the tunnelling transit time is approximately equal to the
reciprocal 1/f of the corresponding frequency of radiation.Comment: 8 pages, 4 figures, 1 tabl
