Hyperbolic phase function used in a spatial light modulator for flat top focus generation

被引：16

作者：

Nodop, Dirk ^{[1
]}

Ruecker, Jan ^{[1
]}

Waechter, Sebastian ^{[1
]}

Kahle, Martin ^{[1
]}

机构：

[1] Gunter Kohler Inst Fugetech & Werkstoffprufung Gm, Otto Schott Str 13, D-07745 Jena, Germany

来源：

OPTICS LETTERS | 2019年 / 44卷 / 09期

关键词：

Flat-top - Focus profiles - Liquid crystal on silicon - Phase functions - Spatial light modulators - Top hat - Transversal beams;

D O I：

10.1364/OL.44.002169

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on a novel transversal beam shaping approach to convert a Gaussian beam to a flat top focus profile by employing a hyperbolic phase function in a liquid crystal on silicon (LCOS) spatial light modulator (SLM). The wellknown Powell lens approach is compared to ours. The analytically obtained phase function for the flat top focus conversion problem is compared to our approach theoretically and experimentally. A strategy for the generation of squared and circular top hat foci is derived. (C) 2019 Optical Society of America

引用

页码：2169 / 2172

页数：4

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