[1]刘晓云,蒲继雄.部分相干光在双焦聚焦系统中的焦移和焦开关[J].华侨大学学报(自然科学版),2006,27(2):137-140.[doi:10.3969/j.issn.1000-5013.2006.02.007]
　Liu Xiaoyun,Pu Jixiong.Focal Shift and Focal Switch of Partially Coherent Light in Dual Focus Systems[J].Journal of Huaqiao University(Natural Science),2006,27(2):137-140.[doi:10.3969/j.issn.1000-5013.2006.02.007]
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部分相干光在双焦聚焦系统中的焦移和焦开关()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第27卷
期数:
2006年第2期
页码:
137-140
栏目:
出版日期:
2006-04-20

文章信息/Info

Title:
Focal Shift and Focal Switch of Partially Coherent Light in Dual Focus Systems
文章编号:
1000-5013(2006)02-0137-04
作者:
刘晓云; 蒲继雄
华侨大学信息科学与工程学院; 华侨大学信息科学与工程学院 福建 泉州 362021; 福建 泉州 362021
Author(s):
Liu Xiaoyun;  Pu Jixiong
College of Information Science and Engineering, Huaqiao University, 362021, Quanzhou, China
关键词:
部分相干光;  焦移;  焦开关;  菲涅耳波片;  衍射
Keywords:
partially coherent light;  focal shift;  focal switch;  Fresnel zone plate;  diffraction
分类号:
O436.1
DOI:
10.3969/j.issn.1000-5013.2006.02.007
文献标志码:
A
摘要:
应用惠更斯-菲涅耳衍射积分公式,研究部分相干光被由菲涅耳波片组成的双聚焦系统聚焦后的焦移现象.研究结果表明,焦移量不仅依赖于聚焦系统的菲涅耳数,而且依赖于入射部分相干光的空间相干度.对于某一固定的菲涅耳波片,降低空间相干度,会导致发生焦开关的临界菲涅耳数降低,但当空间相干度太低时,焦开关现象会消失.
Abstract:
Applying the Huygens-Fresnel diffractive integral, we investigate the phenomenon of the focal shifts when a partially coherent light focused by a dual focus system that is consisted of a Fresnel zone plate. The theoretical results show that the amount of the focal shifts is not only dependent upon the Fresnel number of the focusing system, but also on the spatial coherence of the incident partially coherent light. For a fixed Fresnel zone plate, the decrease of the spatial coherence results in the decrease of the critical Fresnel number at which a focal switch occurs, And, when the spatial coherence is too low, the phenomenon of a focal switch disappears.

参考文献/References:

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备注/Memo

备注/Memo:
国家自然科学基金资助项目(60477041)福建省自然科学基金资助项目(A0510018)国务院侨务办公室科研基金资助项目(03QZR4)
更新日期/Last Update: 2014-03-23