Volume Fresnel zone plates fabricated by femtosecond laser direct writing

被引：47
|
作者：
Srisungsitthisunti, Pornsak [1 ]
Ersoy, Okan K.
Xu, Xianfan
机构：
[1] Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA
[2] Purdue Univ, Sch Elect & Comp Engn, W Lafayette, IN 47907 USA
来源：
APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 01期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1063/1.2425026
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this letter, volume Fresnel zone plates fabricated inside fused silica using femtosecond laser direct writing are demonstrated. A volume zone plate consists of a number of layers of Fresnel zone plates designed to focus light together. Results indicate that volume Fresnel zone plates increase the overall diffraction efficiency significantly. Phase zone plates yield considerably higher diffraction efficiency due to a number of reasons including negligible light absorption, robustness against fabrication phase errors, and minimum interference between different zone plates in a volume.
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页数：3
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