Focal switch: a new effect in low-Fresnel-number systems.
Focal switch: a new effect in low-Fresnel-number systems.
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DOI：
10.1364/ao.35.000024
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发表时间：
1996
期刊：
影响因子：
1.9
通讯作者：
M. Martínez-Corral;V. Climent
中科院分区：
文献类型：
--
作者：
M. Martínez-Corral;V. Climent
我们首次认为，当球面波照射到某种类型的衍射屏时，除了预期的焦移效应外，根据聚焦系统的菲涅耳数的大小，还可以出现焦开关效应，即轴向光强分布的侧瓣高度比中心光强分布的侧瓣高度增加。
It is shown for the first time we believe, that when a spherical wave illuminates a certain type of diffracting screen, in addition to the expected focal-shift effect, depending on the value of the Fresnel number of the focusing system, a focal switch effect can appear, i.e., an increase in the height of the lateral lobe of the axial-intensity distribution over that of the central lobe.