Helicity-dependent three-dimensional optical trapping of chiral microparticles
Langue
en
Article de revue
Ce document a été publié dans
Nature Communications. 2014-07-31, vol. 5, p. 5491 (1-8)
Nature Publishing Group
Résumé en anglais
The rule of thumb of tailored optical forces consists in the control of linear momentum exchange between light and matter. This may be done by appropriate selection of the interaction geometry, optical modes or environmental ...Lire la suite >
The rule of thumb of tailored optical forces consists in the control of linear momentum exchange between light and matter. This may be done by appropriate selection of the interaction geometry, optical modes or environmental characteristics. Here we reveal that the interplay of the helicity of light and the chirality of matter turns the photon spin angular momentum into an efficient tool for selective trapping of chiral particles. This is demonstrated, both experimentally and theoretically, by exploring the three-dimensional optical trapping of chiral liquid crystal microspheres with circularly polarized Gaussian or Laguerre-Gaussian beams. These results suggest the development of novel optomechanical strategies that rely on the photon helicity towards selective trapping and manipulation of chiral objects by chiral light.< Réduire
Origine
Importé de halUnités de recherche