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含Li+的径向梯度折射率棒透镜的研究
引用本文:王耀祥,章兴龙,王佑权,黄琨,马成义. 含Li+的径向梯度折射率棒透镜的研究[J]. 光子学报, 2002, 31(7): 897-900
作者姓名:王耀祥  章兴龙  王佑权  黄琨  马成义
作者单位:中国科学院西安光学精密机械研究所,信息光学研究室,西安,710068
摘    要:研究发现在硼硅酸盐系统玻璃中,利用Li+/Na+离子交换来制取径向梯度折射率(GRIN)棒透镜时,基质玻璃中重要的成分Li2O含量对径向GRIN棒透镜的象差和数值孔径值有着明显的影响,并着重分析和讨论了实验中Li2O含量对径向GRIN棒透镜中折射率分布、数值孔径及象差影响机制.进一步指出实验中Li2O含量存在一个最佳值,既能够满足径向GRIN棒透镜获得较大的数值孔径又满足其具有较小的象差.

关 键 词:径向梯度折射率  离子交换  折射率分布  数值孔径  象差  棒透镜
收稿时间:2001-11-20
修稿时间:2001-11-20

RADIAL GRADIENT INDEX ROD CONTAINING Li+
Wang Yaoxiang,Zhang Xinglong,Wang Youquan,Huang Kun,Ma Chenyi Xi'an Institute of Optics and Precision Mechanics,Academia Sinica,Xi'an. RADIAL GRADIENT INDEX ROD CONTAINING Li+[J]. Acta Photonica Sinica, 2002, 31(7): 897-900
Authors:Wang Yaoxiang  Zhang Xinglong  Wang Youquan  Huang Kun  Ma Chenyi Xi'an Institute of Optics  Precision Mechanics  Academia Sinica  Xi'an
Affiliation:Wang Yaoxiang,Zhang Xinglong,Wang Youquan,Huang Kun,Ma Chenyi Xi'an Institute of Optics and Precision Mechanics,Academia Sinica,Xi'an 710068
Abstract:In this paper,the relation between the radial gradient index rod lens obtained by Li +/Na + ion exchang and alkali metal oxide(Li 2 O) contents in their mother glass composition is studied.It is observed that Li 2 O contents is one of the important factors which affect the performance of the rod lens.Firstly the more Li 2 O contents become the more the quality of Li + which can exchang with Na + in molten salt become,afterwords the numerical apeture of rod lens improved,at the same time because of the difference of ion exchang rate between the middle region and marginal region of the rod lens,the refractive index profile of the radial GRIN rod lens begin to deviate from desired n 2(r)=n 2 0sech 2(gr) function.When the Li 2 O contents is beyond 14mol%,it is easy to emerge the platform at the marginal of rod lens,this causes the numerical apeture decreases and the quality of image deteriorates rapidly.
Keywords:Radial gradient index  Ion exchange  Refractive index profile  Abberation  Numerical Apeture
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