Composite method for precise freeform optical beam shaping

被引：23

作者：

Feng, Zexin ^{[1
,2
]}

Froese, Brittany D. ^{[3
]}

Liang, Rongguang ^{[1
]}

机构：

[1] Univ Arizona, Coll Opt Sci, Tucson, AZ 85721 USA

[2] Tsinghua Univ, Dept Precis Instrument, Beijing 100084, Peoples R China

[3] Univ Hts, New Jersey Inst Technol, Dept Math Sci, Newark, NJ 07102 USA

来源：

APPLIED OPTICS | 2015年 / 54卷 / 31期

关键词：

DESIGN; PHASE; IRRADIANCE; ALGORITHM; ELEMENTS;

D O I：

10.1364/AO.54.009364

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a composite freeform surface construction method for creating a high-accuracy irradiance distribution from a given incident beam under the influence of diffraction. The main idea is that we first determine a fully continuous freeform surface estimate by solving a standard Monge-Ampere equation and then refine it using an iterative Fourier-transform algorithm associated with over-compensation. Although this method can only be implemented in the paraxial approximation, it can significantly simplify the design and is applicable to many examples that fulfill this restriction. The resulting optical surface, unwrapped from the final phase, is an unusual discontinuous freeform surface that can produce very promising performances in terms of surface roughness and irradiance accuracy. (C) 2015 Optical Society of America

引用

页码：9364 / 9369

页数：6

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