https://doi.org/10.1051/epjconf/202328711005
Conversion of a beam carrying fractionnal angular momentum in High-Harmonics Generation
1 Université Paris-Saclay, CEA, CNRS, LIDYL, 91191 Gif-sur-Yvette, France
2 Grupo de Investigación en Aplicaciones del Láser y Fotónica, Departamento de Física Aplicada, University of Salamanca, Salamanca E-37008, Spain
3 Instituto de Física, Universidade Federal Fluminense, 24210-346 Niterói, RJ, Brazil
4 Department of Physics, King’s College London, Strand Campus, WC2R 2LS, London, UK
* e-mail: matthieu.guer@cea.fr
** e-mail: thierry.ruchon@cea.fr
Published online: 18 October 2023
Exotic light fields combining non-trivial spin and angular momentum may not be eigenstates of either the spin or orbital angular momenta operators. For these fields, it is relevant to define a Generalized Angular Momentum operator of which they are eigenvectors. Their associated eigenvalues can take, depending on the case, non-integer values. We report that this new quantity is conserved via non-linear phenomena, such as High Harmonic Generation.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
