Goos–Hänchen effect

The Goos–Hänchen effect (named after Hermann Fritz Gustav Goos (1883–1968) and Hilda Hänchen (1919–2013) is an optical phenomenon in which linearly polarized light undergoes a small lateral shift when totally internally reflected.

[3] The work by M. Merano et al.[4] studied the Goos–Hänchen effect experimentally for the case of an optical beam reflecting from a metal surface (gold) at 826 nm.

It is known that the value of lateral position Goos–Hänchen shift is only 5–10 μm at a total internal reflection interface of water and air, which is very difficult to be experimentally measured.

[5][6] In order to generate a giant Goos–Hänchen shift up to 100 μm, surface plasmon resonance techniques were applied based on an interface between metal and dielectric.

[10] This giant Goos–Hänchen shift has been applied not only for highly sensitive detection of biological molecules, but also for the observation of photonic spin Hall effect, which is important in quantum information processing and communications.