对涡旋光束经过环形孔径之后的衍射特性进行了研究,目的是根据获得的衍射图样来测定涡旋光束的拓扑电荷数.从理论和实验上研究了涡旋光束经过环形孔径的衍射情况,得出结果是可以通过实验实现.研究了整数阶涡旋光束和分数阶涡旋光束的衍射光强图,并讨论了拓扑电荷数的改变对衍射图样的影响,可以较全面地测定涡旋光束的拓扑电荷数.研究表明,拓扑电荷数与光强分布一一对应,这一现象可以用于测定涡旋光束拓扑电荷数,即可以根据衍射图样来测定拓扑电荷数.
参考文献
| [1] | Allen L,Beijersbergen M,Spreeuw R,et al.Orbital angular momentum of light and the transformation of Laguerre-Gaussian laser modes[J].Phys.Rev.A,1992,45(11):8185-8189. |
| [2] | Li D M.Using linear optical devices to achieve three-body entangled coherent state entanglement swapping[J].Chinese Journal of Quantum Electronics (量子电子学报),2009,26(4):446-450 (in Chinese). |
| [3] | Liu Y D,Gao C Q,Gao M W,et al.Realizing high density optical data storage by using orbital angular momentum of light beam[J].Acta Phys.Sin.(物理学报),2007,56(2):854-858 (in Chinese). |
| [4] | Rao L Z,Chen Z Y,Pu J X.Spectral changes of partially coherent light beam diffracted by a knife-edge[J].Chinese Journal of Quantum Electronics (量子电子学报),2007,24(1):23-26 (in Chinese). |
| [5] | Aydi H,Sandier E.Vortex analysis of the periodic Ginzburg-Landau model[J].Annales de I' Institut Henri Poineare (c) Non Linear Analysis,2009,26(4):1223-1236. |
| [6] | Yan H W,Lu B D.Vortex-edge dislocation interaction in the presence of an astigmatic lens[J].Opt.Commun.,2009,282(5):717-726. |
| [7] | Cheng K,Lu B D.Spatial correlation properties and correlation vortices of partially coherent vortex beams diffracted by an aperture[J].J.Mod.Opt.,2009,56(9):1119-1127. |
| [8] | Liu P S,Lü B D.Coherence vortices of partially coherent beams in the far field[J].Chin.Phys.Soc.,2007,16(2):411-415. |
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