光子学报
光子學報
광자학보
ACTA PHOTONICA SINICA
2009年
7期
1602-1607
,共6页
非均匀偏振光束%像散透镜%环状光阑%聚焦特性
非均勻偏振光束%像散透鏡%環狀光闌%聚焦特性
비균균편진광속%상산투경%배상광란%취초특성
Non-uniformly polarized (NUP) beam%Astigmatic lens%Annular aperture%Focusing property
借助于光束相干偏振矩阵和广义惠更斯-菲涅耳衍射积分公式,研究了非均匀偏振(NUP)光束通过环状光阑像散透镜的聚焦特性,并将圆孔光阑作为环状光阑内径为零的特例处理.数值计算结果表明,实际焦点位置、光强和偏振度分布与透镜的像散、环状光阑的菲涅耳数和遮拦比以及NUP光束参量有关.
藉助于光束相榦偏振矩陣和廣義惠更斯-菲涅耳衍射積分公式,研究瞭非均勻偏振(NUP)光束通過環狀光闌像散透鏡的聚焦特性,併將圓孔光闌作為環狀光闌內徑為零的特例處理.數值計算結果錶明,實際焦點位置、光彊和偏振度分佈與透鏡的像散、環狀光闌的菲涅耳數和遮攔比以及NUP光束參量有關.
차조우광속상간편진구진화엄의혜경사-비열이연사적분공식,연구료비균균편진(NUP)광속통과배상광란상산투경적취초특성,병장원공광란작위배상광란내경위령적특례처리.수치계산결과표명,실제초점위치、광강화편진도분포여투경적상산、배상광란적비열이수화차란비이급NUP광속삼량유관.
By means of the beam coherence-polarization (BCP) matrix formulation and generalized Huygens-Fresnel diffraction integral,the properties of non-uniformly polarized (NUP) beams focused by an astigmatic lens with annular aperture were studied,where the circular aperture is treated as a special case by letting inner radius of the annular aperture b=0.The dependence of position of real focus,intensity and degree of polarization distributions on the lens astigmatism,Fresnel number and obscure ratio of the annular aperture and polarization parameters of NUP beams was illustrated by numerical examples.
