搜索结果: 1-15 共查到“理学 vortex beams”相关记录20条 . 查询时间(0.078 秒)
日前，Springer出版集团出版了由北京理工大学光电学院付时尧长聘副教授、高春清教授共同撰写的学术专著Optical Vortex Beams,Fundamentals and Techniques。该专著全面介绍了涡旋光场调控的理论与技术基础，同时介绍了该团队在涡旋光场调控方面的相关研究工作。该专著受Springer邀请撰写，是Springer系列图书Advances in Optics an...
Focusing properties of the double-vortex beams through a high numerical-aperture objective
Focusing properties double-vortex beams high numerical-aperture objective
2013/7/3
Focusing properties of the double-vortex beams through a high numerical-aperture objective.
Propagation properties of stochastic electromagnetic double-vortex beams in turbulent atmosphere
double-vortex beams coherent polarization turbulent atmosphere
2013/7/3
Based on the extended Huygens–Fresnel principle, we study the propagation properties of stochastic electro-magnetic double-vortex beams in turbulent atmosphere. The result shows that the spreading of ...
Propagation of partially coherent double-vortex beams in turbulent atmosphere
Partially coherent Double-vortex beams Turbulent atmosphere
2013/7/3
Based on the extended Huygens–Fresnel principle, we study the propagation properties of partially coherent double-vortex beams in turbulent atmosphere. The intensity distribution of the beams on propa...
Investigation on the scintillation reduction of elliptical vortex beams propagating in atmospheric turbulence
Atmospheric optics Free-space optical communication
2013/7/3
We numerically investigate the scintillation index of an elliptical vortex beam in both modest turbulence and strong turbulence. Numerical simulations are realized with random phase screen sc...
Experimental investigation on the scintillation index of vortex beams propagating in simulated atmospheric turbulence
Experimental investigation scintillation index vortex beams propagating simulated atmospheric turbulence
2013/7/3
The scintillation index of vortex beam in simu-lated atmospheric turbulence is experimentally investigated.The fluctuation of the intensity can be effectively reduced by vortex beams. In particular, t...
Orbital Angular Momentum in Noncollinear Second Harmonic Generation by off-axis vortex beams
Harmonic generation and mixing Optical Vortices Orbital Angular Momentum
2011/8/31
We experimentally study the behavior of orbital angular momentum (OAM) of light in a noncollinear second harmonic generation (SHG) process. The experiment is performed by using a type I BBO crystal un...
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...
Tight focusing of partially polarized vortex beams by binary phase Fresnel zone plates
partially polarized vortex beams high numerical aperture binary phase Fresnel zone plates
2013/7/3
Based on vectorial Debye theory, the focusing properties of partially polarized vortex beam by high numerical aperture Fresnel zone plate are investigated. The effects of the numerical apertures of an...
Polarisation singularities of non-paraxial Gaussian vortex beams diffracted by an annular aperture
polarisation singularities non-paraxial annular aperture C-points
2013/7/3
Based on the vectorial Rayleigh–Sommerfeld diffraction integrals, the propagation expressions for non-paraxial Gaussian vortex beams diffracted by an annular aperture are derived, and are used to anal...
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...
Tight focusing of partially coherent, partially polarized vortex beams
tight focusing partially coherent partially polarized vortex
2013/7/3
We study the tight focusing properties of partially coherent, partially polarized vortex beams through a high numerical aperture (NA) objective. The influence of the degree of polarization,the topolog...
Measuring the orbital angular momentum of elliptical vortex beams by using a slit hexagon aperture
Orbital angular momentum Elliptical vortex beam Hexagon aperture
2013/7/3
The far- fi eld diffraction pattern of an elliptical vortex beam by a slit hexagon aperture is investigated theoretically and experimentally. It is found that the number of the dark spots or stripes i...
Tight focusing of partially coherent and circularly polarized vortex beams
Tight focusing partially coherent circularly polarized vortex beams
2013/7/3
Based on the vectorial Debye theory, the tight focusing properties of partially coherent and circularly polarized vortex beams are investigated. The focused characteristics of right-circular and left-...
Tight focus ing of elliptic ally polarized vortex beams
Tight focusing elliptic ally polarized vortex beams
2013/7/3
We study the focusing properties of elliptically polarized vortex beams. Based on vectorial Debye theory,some numerical calculations are given to illustrate the intensity and phase distribution proper...