Hemispherical digital optical condensers with no lenses, mirrors, or moving parts

被引：18

作者：

Dominguez, Daniel ^{[1
,2
]}

Molina, Luis ^{[3
]}

Desai, Darshan B. ^{[1
]}

O'Loughlin, Trevor ^{[1
]}

Bernussi, Ayrton. A. ^{[2
,4
]}

de Peralta, Luis Grave ^{[1
,2
]}

机构：

[1] Texas Tech Univ, Dept Phys, Lubbock, TX 79409 USA

[2] Texas Tech Univ, Nano Tech Ctr, Lubbock, TX 79409 USA

[3] LJ Technol, Hialeah, FL 33101 USA

[4] Texas Tech Univ, Dept Elect & Comp Engn, Lubbock, TX 79409 USA

来源：

OPTICS EXPRESS | 2014年 / 22卷 / 06期

基金：

美国国家科学基金会;

关键词：

FAR-FIELD SUPERLENS; FLUORESCENCE MICROSCOPY; DIFFRACTION LIMIT; RESOLUTION; HYPERLENS; LEAKAGE; ARRAY;

D O I：

10.1364/OE.22.006948

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a simple method for obtaining direct non-scanning images in the far-field with subwavelength resolution. Our approach relies on the use of a digital optical condenser comprised of an array of light emitting diodes uniformly distributed inside of a hollow hemisphere. We demonstrate experimental observation of minimum feature sizes of the order lambda/6 with the proposed technique. Although our experiments were performed at visible frequencies, we anticipate that the proposed approach to subwavelength resolution can be extended to the ultraviolet and infrared spectral regions. (C) 2014 Optical Society of America

引用

页码：6948 / 6957

页数：10

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