利用改进的螺旋相位板产生强度调制光学涡旋Generation of Optical Vortices With Intensity Modulation Via Advanced Sprial Phase Plate
韩玉晶
摘要(Abstract):
从理论上分析了具有相位调制偏差的螺旋相位板所产生光场的涡旋特性,发现涡旋场主环上存在周期性的强度调制,而且中心有一亮斑,这一亮斑严重影响了调制涡旋场的质量;为了产生高质量的调制涡旋场,提出了一种改进的螺旋相位板,利用这种螺旋相位板产生的涡旋场在衍射过程中依然保持了很好的强度调制特性,实验结果和理论分析相吻合。
关键词(KeyWords): 螺旋相位板;强度调制;光学涡旋
基金项目(Foundation):
作者(Author): 韩玉晶
DOI: 10.16393/j.cnki.37-1436/z.2008.05.011
参考文献(References):
- [1]Allen L,Beijersbergen M W,Spreeuw R J C,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]Paterson L,MacDonald MP,Arlt J,et al.Controlled rotation of optically trapped microscopic particles[J].Science,2001,292(4):912-914.
- [3]Mair A,Vaziri A,Weihs G,et al.Entanglement of the Orbital Angular Momentum States of Photons[J].Nature(London),2001,412(3):313-316.
- [4]He H,Friese ME J,Heckenberg N R,et al.Direct observation of transfer of angular momentum to absorptive particles from alaser beam with a phase singularity[J].Phys.Rev.Lett,1995,75(5):826-829.
- [5]Khonina N,Kotlyar V V,Shinkarev M V,et al.The phase rotor filter[J].J.Mod.Opt,1992,39(5):1147-1154.
- [6]Davis J A,Carcole E,Cottrell D M.Intensity and phase measurements of nondiffracting beams generated with a magneto-opticspatial light modulator[J].Appl.Opt,1996,35(4):593-598.
- [7]Lin J,Yuan X C,Tao S H,et al.Collinear superposition of multiple helical beams generated by a single azimuthally modulatedphase-only element[J].Opt.Lett,2005,30(24):3266-3268.
- [8]Davis J A,Bentley J B.Azimuthal prism effect with partially blocked vortex-producing lenses[J].Opt.Lett,2005,30(23):3204-3206.
- [9]Guo C S,Liu X,He J L,et al.Optimal annulus structures of optical vortices[J].Opt.Exp,2004,12(19):4625-4634.
- [10]Lee S H,Grier D G.Robustness of holographic optical traps against phase scaling errors[J].Opt.Exp,2005,13(19):7458-7465.