Weak measurement of the composite Goos-Hänchen shift in the critical region.

By using a weak measurement technique, we investigated the interplay between the angular and the lateral Goos–Hanchen shift of a focused He–Ne laser beam for incidence near the critical angle. We verified that this interplay dramatically affects the composite Goos–Hanchen shift of the propagated beam. The experimental results confirm theoretical predictions that recently appeared in the literature.