20.500.12556/RUL-180308 Optomechanical separation of transverse spin and orbital energy flows in liquid crystals We report a nondissipative optomechanical approach to separate the spin and orbital components of transverse energy flows of light beams. Focusing on uniformly polarized paraxial fields, the method relies on detecting the radiation-pressure-induced reorientation of the optical axis in anisotropic media—specifically, liquid crystals. Within a perturbative analytical approach, we demonstrate the selective encoding of the transverse spin and orbital components of the Poynting vector into orthogonal orientational elastic modes, whose relative weights are mediated by the Gouy phase. The spatial distributions of spin and orbital momentum can therefore be retrieved without resorting to point-by-point measurements using absorbing or scattering probe particles. Analytical results are supported by a fully self-consistent numerical solution coupling Maxwell’s equations and Landau-de Gennes nematodynamics in three dimensions. This exact framework captures higher-order and nonparaxial effects beyond the analytical perturbative regime and allows us to validate the predicted Gouy-phase-mediated optomechanical response. These results establish a practical route toward optomechanical imaging of the internal momentum structure of light, fostering momentum-resolved optical metrology and light-matter interaction studies with structured beams. liquid crystals optomechanics polarization of light tekoči kristali optomehanika polarizacija svetlobe true false true Angleški jezik Slovenski jezik Članek v reviji 2026-03-05 14:47:51 2026-03-05 14:47:52 2026-03-06 04:33:09 0000-00-00 00:00:00 2026 0 0 Str. 013235-1-013235-8 iss. 1 Vol. 8 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 538.9:535 2643-1564 10.1103/59st-f1mb 270647043 59st-f1mb.pdf 59st-f1mb.pdf 1 58E21E16ACBEC44383CE0217A31C4B49 1b6a307894411910dd9e04691fec78daf36a92fe7802e29d4e487c8fffe0ce17 ba2192af-1899-11f1-a1ba-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=229560 https://journals.aps.org/prresearch/abstract/10.1103/59st-f1mb 0 c17125f3-1899-11f1-a1ba-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=229561 Fakulteta za matematiko in fiziko 0 0 0