| Full text | |
| Author(s): |
Luttmann, Martin
;
Vimal, Mekha
;
Guer, Matthieu
;
Jean-Francois, Hergott
;
Khoury, Antonio Z.
;
Hernandez-Garcia, Carlos
;
Pisanty, Emilio
;
Ruchon, Thierry
Total Authors: 8
|
| Document type: | Journal article |
| Source: | SCIENCE ADVANCES; v. 9, n. 12, p. 8-pg., 2023-03-24. |
| Abstract | |
Symmetries and conservation laws of energy, linear momentum, and angular momentum play a central role in nonlinear optics. Recently, paraxial light fields with nontrivial topology have been attracting a keen interest. Despite not being eigenstates of the orbital and spin angular momenta (OAM and SAM), they are eigenstates of the generalized angular momentum (GAM) operator-a mixture of the OAM and SAM operators with frac-tional eigenvalues. By driving high harmonic generation with a polarization Mobius strip carrying a half-integer GAM charge and implementing angular momentum characterization methods in the extreme ultraviolet range, we demonstrate the linear scaling of the GAM with the harmonic order, each harmonic carrying a precise half -integer GAM charge. Our work shows that beyond SAM and OAM, the GAM is, in some situations, an appropriate quantum number. It paves the way for finer manipulations and applications of light beams containing fraction-al-order polarization singularities. (AU) | |
| FAPESP's process: | 21/06823-5 - Quantum Rio network |
| Grantee: | Antonio Zelaquett Khoury |
| Support Opportunities: | Research Projects - Thematic Grants |