Experimental evidence of laser power oscillations induced by the relative Fresnel (Goos–Hänchen) phase

The amplification of the relative Fresnel (Goos–Hänchen) phase by an appropriate number of total internal reflections and the choice of favorable incidence angles allow to observe full oscillations in the power of a DPSS laser transmitted through sequential BK7 blocks. The experimental results confirm the theoretical predictions. The optical apparatus used in this letter can be seen as a new type of two-phase ellipsometric system where the phase of the complex refractive index is replaced by the relative Fresnel (Goos–Hänchen) phase.