Issue |
EPJ Web Conf.
Volume 287, 2023
EOS Annual Meeting (EOSAM 2023)
|
|
---|---|---|
Article Number | 04006 | |
Number of page(s) | 2 | |
Section | Topical Meeting (TOM) 4- Nanophotonics | |
DOI | https://doi.org/10.1051/epjconf/202328704006 | |
Published online | 18 October 2023 |
https://doi.org/10.1051/epjconf/202328704006
Spin-to-orbital angular momentum transfer by second harmonic generation in thin dielectric films
1 CNIT and Department of Information Engineering, University of Brescia, Via Branze, 38 - Brescia, 25123, Italy
2 Istituto Nazionale di Ottica, Consiglio Nazionale delle Ricerche, Via Branze, 45 - Brescia, 25123, Italy
3 Laboratoire MPQ, Université Paris Cité CNRS, 10 rue A. Domon et L. Duquet, 75013 Paris, France
4 Charles M. Bowden Research Center, Redstone Arsenal, AL 35898-5000
5 Université Grenoble Alpes, CEA, IRIG-PHELIQS, Grenoble, France
* e-mail: domenico.deceglia@unibs.it
Published online: 18 October 2023
We demonstrate spin-to-orbital angular momentum transfer in the bulk of nonlinear optical materials with a crystal symmetry that couples the longitudinal component of the pump field. Our predictions are exper-imentally confirmed with a thin film of gallium arsenide, which generates vortex beams of second-harmonic light when pumped with a CP Gaussian beam.
© The Authors, published by EDP Sciences, 2023
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