ArticleScience advances2023
Nonlinear up-conversion of a polarization Möbius strip with half-integer optical angular momentum.
Article in Science advances, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Optical spin-orbit interaction induced by magnetic textures.Scientific reports · 2026Article
- Multiple Multicolored 3D Polarization Knots Arranged along Light Propagation.ACS photonics · 2024Article
- Circularly Polarized High-Harmonic Beams Carrying Self-Torque or Time-Dependent Orbital Angular Momentum.ACS photonics · 2024Article
- High-harmonic spin-orbit angular momentum generation in crystalline solids preserving multiscale dynamical symmetry.Science advances · 2024Article
- Longitudinally variable 3D optical polarization structures.Science advances · 2023Article
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Authors and funding
8 authors.
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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 fractional eigenvalues. By driving high harmonic generation with a polarization Möbius 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 fractional-order polarization singularities.
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