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电控振幅型超分辨光瞳滤波器的调谐特性分析

Tuning Analysis of Electrically Controlled Amplitude-based Superresolution Pupil Filter

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摘要

根据空间偏振态调制和偏振干涉的原理,设计了一种能通过外加电压调谐的振幅型光瞳滤波器,实现了横向超分辨下轴向焦移与焦深的实时控制。该滤波器由两个透射光轴平行的偏光镜,置于其间的一个电光晶体和一个二区域λ/2波片组成。分析了滤波后光学系统焦点附近光强的分布及电光调谐特性,在电光相位延迟-π-π之间,二区域λ/2波片内外径取优化值时,可实现横向超分辨及轴向焦移的实时调控,等效于一个可实现横向超分辨的电光调焦透镜。电光相位延迟一定时,二区域λ/2波片内区方位角的改变可实现第一零点比的调整;内区方位角一定时,电光相位延迟的改变可实现焦深的实时控制。

Abstract

Based on space-variant polarization manipulation and polarizing interference,a set of amplitude pupil filters is presented. The control of axial focal shift and extended focal depth can be realized when keeping the transverse superresolution. This filter consists of two parallel polarizers,an electro-optical crystal and a two-zone half-wave plate. The electro-optical tuning characteristic and modulated distribution of intensity in the focal region of the filtered optical system are analyzed. When the modulated phase delay varies from –π to π,the real-time control of the focal shift and transverse superresolution behavior can be obtained. Here this system can be realized as a lens having variable focus with transverse superresolution adjusted by external voltage. The ratio of the first zero position can be modulated by azimuth angle of the inner λ/2 plate when the electro-optical phase delay is chosen. The electro-optical phase delay to change the focal depth can be realized in real-time control when the azimuth angle of the inner λ/2 plate is chosen.

广告组1 - 空间光调制器+DMD
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中图分类号:O436

DOI:10.3788/aos20103005.1464

所属栏目:光学器件

基金项目:国家自然科学基金(50675103,60808026)、教育部博士点专项基金(200802871028)、归国人员科研启动基金和江苏省六大人才高峰项目(07-A-011)资助课题。

收稿日期:2009-08-02

修改稿日期:2009-09-30

网络出版日期:0001-01-01

作者单位    点击查看

谢翊乐:南京航空航天大学 应用物理系,江苏 南京 210016
王吉明:南京航空航天大学 应用物理系,江苏 南京 210016
刘友文:南京航空航天大学 应用物理系,江苏 南京 210016

联系人作者:谢翊乐(lele_nuaa08@msn.com)

备注:谢翊乐|主要从事晶体偏振光学、信息光学方面的研究|(1984-),男,硕士研究生。

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引用该论文

Xie Yile Wang Jiming Liu Youwen. Tuning Analysis of Electrically Controlled Amplitude-based Superresolution Pupil Filter[J]. Acta Optica Sinica, 2010, 30(5): 1464-1468

谢翊乐,王吉明,刘友文. 电控振幅型超分辨光瞳滤波器的调谐特性分析[J]. 光学学报, 2010, 30(5): 1464-1468

被引情况

【1】云茂金,王美,孔伟金,刘立人,梁健,朱化凤,高秀敏. 可调光瞳滤波器的轴向焦移及扩展焦深. 光学学报, 2011, 31(3): 311003--1

【2】朱化凤,徐丹,王秀民,云茂金,南玉杰,王宁,李代林,田艳杰. 消色差相位型超分辨光瞳滤波器的设计研究. 光学学报, 2012, 32(5): 522001--1

【3】朱化凤,刘为森,衡科尹,陈胜,戈立娜. 基于晶体的“非三明治”结构可调横向超分辨光瞳滤波器设计. 中国激光, 2012, 39(10): 1016002--1

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