Geometric Spin Hall Effect of Light at polarizing interfaces

• Published in: Applied physics. B, Lasers and optics Vol. 102; no. 3; pp. 427 - 432
• Main Authors: Korger, J., Aiello, A., Gabriel, C., Banzer, P., Kolb, T., Marquardt, C., Leuchs, G.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 01-03-2011
• Subjects: Cartesian; Decomposition; Energy density; Engineering; Hall effect; Lasers; Light beams; Optical Devices; Optics; Photonics; Physical Chemistry; Physics; Physics and Astronomy; Polarization; Quantum Optics; Response functions; Energy Density; Polarize Interface; Grazing Incidence; Light Beam; Poynting Vector
• ISSN: 0946-2171; 1432-0649
• DOI: 10.1007/s00340-011-4400-z

The geometric Spin Hall Effect of Light (geometric SHEL) amounts to a polarization-dependent positional shift when a light beam is observed from a reference frame tilted with respect to its direction of propagation. Motivated by this intriguing phenomenon, the energy density of the light beam is decomposed into its Cartesian components in the tilted reference frame. This illustrates the occurrence of the characteristic shift and the significance of the effective response function of the detector.
We introduce the concept of a tilted polarizing interface and provide a scheme for its experimental implementation. A light beam passing through such an interface undergoes a shift resembling the original geometric SHEL in a tilted reference frame. This displacement is generated at the polarizer and its occurrence does not depend on the properties of the detection system. We give explicit results for this novel type of geometric SHEL and show that at grazing incidence this effect amounts to a displacement of multiple wavelengths, a shift larger than the one introduced by Goos–Hänchen and Imbert–Fedorov effects.