English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Transverse spinning of unpolarized light

MPS-Authors
/persons/resource/persons224569

Eismann,  Jörg
Interference Microscopy and Nanooptics, Emeritus Group Leuchs, Emeritus Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Institute of Optics, Information, and Photonics, University Erlangen-Nuremberg;

/persons/resource/persons201008

Banzer,  Peter
Interference Microscopy and Nanooptics, Emeritus Group Leuchs, Emeritus Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Institute of Optics, Information, and Photonics, University Erlangen-Nuremberg;

External Ressource
No external resources are shared
Fulltext (public)
Supplementary Material (public)
There is no public supplementary material available
Citation

Eismann, J., Nicholls, L., Roth, D. J., Alonso, M. A., Banzer, P., Rodríguez-Fortuño, F. J., et al. (2020). Transverse spinning of unpolarized light. Nature Photonics. doi:10.1038/s41566-020-00733-3.


Cite as: http://hdl.handle.net/21.11116/0000-0006-45E4-B
Abstract
It is well known that spin angular momentum of light, and therefore that of photons, is directly related to their circular polarization. Naturally, for totally unpolarized light, polarization is undefined and the spin vanishes. However, for nonparaxial light, the recently discovered transverse spin component, orthogonal to the main propagation direction, is largely independent of the polarization state of the wave. Here we demonstrate, both theoretically and experimentally, that this transverse spin survives even in nonparaxial fields (e.g., tightly focused or evanescent) generated from a totally unpolarized light source. This counterintuitive phenomenon is closely related to the fundamental difference between the degrees of polarization for 2D paraxial and 3D nonparaxial fields. Our results open an avenue for studies of spin-related phenomena and optical manipulation using unpolarized light.