Zobrazeno 1 - 10
of 174
pro vyhledávání: '"Siemens Mark E."'
We demonstrate two-step phase-shifting interferometry (holography) of complex laser modes generated by a spatial light modulator (SLM), in which the amplitude and phase of the signal are determined directly from measurements of phase-shifted interfer
Externí odkaz:
http://arxiv.org/abs/2409.08945
Publikováno v:
APL Photonics 9, 066107 (2024)
We propose and experimentally demonstrate a method to directly measure the phase of biphoton states using an entangled mode as a collinear reference. The technique is demonstrated with entangled photonic spatial modes in the Laguerre-Gaussian basis,
Externí odkaz:
http://arxiv.org/abs/2406.11744
Publikováno v:
Physics of Fluids 1 March 2024; 36 (3): 034128
We observe and measure the nonequilibrium dynamics of optical vortices as a function of propagation distance through a nonlinear medium. The precession of a tilted-core vortex is quantified as is vortex-core sharpening, where the infinite width of a
Externí odkaz:
http://arxiv.org/abs/2404.00148
Publikováno v:
J. Opt. Soc. Am. B 40, 2475-2479 (2023)
We demonstrate entangled-state swapping, within the Hermite-Gaussian basis of first-order modes, directly from the process of spontaneous parametric down-conversion within a nonlinear crystal. The method works by explicitly tailoring the spatial stru
Externí odkaz:
http://arxiv.org/abs/2309.02296
Publikováno v:
Phys. Rev. A 108, 023509 (2023)
Linear combinations of Bessel beams can be used to effectively trap light within cylindrical domains. Such hard traps can be used to produce states that exhibit stationary arrays of optical vortices from the perspective of a steadily rotating frame.
Externí odkaz:
http://arxiv.org/abs/2308.08036
Publikováno v:
Opt. Lett. 48, 2680-2683 (2023)
We present and implement a method for the experimental measurement of geometric phase of non-geodesic (small) circles on any SU(2) parameter space. This phase is measured by subtracting the dynamic phase contribution from the total phase accumulated.
Externí odkaz:
http://arxiv.org/abs/2305.06905
The Peripheral Vortex Biome of Confined Quantum Fluids and Its Influence on Vortex Pair Annihilation
The self-annihilation of oppositely charged optical vortices in a quantum fluid is hindered by nonlinearity and promoted by radial confinement, resulting in rich life-cycle dynamics of such pairs. The competing effects generate a biome of peripheral
Externí odkaz:
http://arxiv.org/abs/2204.02769
Publikováno v:
Opt. Lett. 47, 1089-1092 (2022)
We provide the first experimental demonstration of geometric phase generated in association with closed Poincar\'e Sphere trajectories comprised of geodesic arcs that do not start, end, or necessarily even include, the north and south poles that repr
Externí odkaz:
http://arxiv.org/abs/2202.11157
Publikováno v:
Optics Letters Vol. 45 No. 6 (2020), 1321-1324
We propose the braiding of optical vortices in a laser beam with more than 2{\pi} rotation by superposing Bessel modes with a plane wave. We experimentally demonstrate this by using a Bessel-Gaussian beam and a coaxial Gaussian, and we present measur
Externí odkaz:
http://arxiv.org/abs/2111.10405
Publikováno v:
Optics Letters Vol. 47 No. 6 pp. 1391-1394 (2022)
We show that a two-dimensional hydrodynamics model provides a physical explanation for the splitting of higher-charge optical vortices under elliptical deformations. The model is applicable to laser light and quantum fluids alike. The study delineate
Externí odkaz:
http://arxiv.org/abs/2111.08832