搜索结果: 1-6 共查到“光学 Topological”相关记录6条 . 查询时间(0.242 秒)
Topological-phase effects and path-dependent interference in microwave structures with magnetic-dipolar-mode ferrite particles
Topological-phase effects path-dependent interference microwave structures magnetic-dipolar-mode ferrite particles
2012/4/19
Different ways exist in optics to realize photons carrying nonzero orbital angular momentum. Such photons with rotating wave fronts are called twisted photons. In microwaves, twisted fields can be pro...
Measuring the topological charge of vortex beams by using an annular ellipse aperture
Measuring the topological charge vortex beams an annular ellipse aperture
2013/7/3
We theoretically and experimentally investigate the Fraunhofer diffraction pattern of a vortex beam passing through an annular ellipse aperture. It is found that the pat-tern of the far-field diffract...
Detecting the topological charge of vortex beams using an annular triangle aperture
Vortex beam Topological charge Annular triangle aperture
2013/7/3
The Fraunhofer diffraction pattern of a vortex beam by an annular triangle aperture is analyzed theoretically and experimentally. It is found that the pattern of the far-field diffraction intensity di...
Classical GR as a topological theory with linear constraints
Classical GR topological theory linear constraints
2010/12/20
We investigate a formulation of continuum 4d gravity in terms of a constrained topological (BF) theory, in the spirit of the Plebanski formulation, but involving only linear constraints,
Measuring the Topological Charge of Integer and Fraction Vortices Using Multipoint Plates
vortex beams multipoint plates interference
2013/7/3
The topological charge of integral vortex beams with a single circle of multipoints has previously been measured. In this work, we theoretically and experimental study the diffraction patterns of vort...
Beam-spreading and topological charge of vortex beams propagating in a turbulent atmosphere
Vortex beams Turbulent atmosphere Beam-spreading Orbital angular momentum
2013/7/3
We theoretically and experimentally investigate the beam-spreading of a vortex beam propagating in a turbulent atmosphere. It is found that the vortex beam is less affected by turbulence than a non-vo...