Researchers from the Centre de Nanosciences et de Nanotechnologies (C2N) in Palaiseau, together with collaborators from Laboratory Phlam in Lille and from the Institut Pascal in Clermont-Ferrand, have put forward a novel integrated laser architecture in which light is emitted in a chiral state, thus producing corkscrews of light. The advantage of this microlaser is that the orientation of the corkscrew (from clockwise to counter clockwise) can be controlled by simple optical means. The work, published in Nature Photonics, could help in the development of a new generation of microlasers emitting chiral light that could be used for encoding information in the orbital angular momentum basis.
Optically controlling the emission chirality of microlasers, N. Carlon Zambon, P. St-Jean, M. Milićević, A. Lemaître, A. Harouri, L. Le Gratiet, O. Bleu, D. D. Solnyshkov, G. Malpuech, I. Sagnes, S. Ravets, A. Amo and J. Bloch
Nature Photonics DOI: https://doi.org/10.1038/s41566-019-0380-z / Available on arXiv