The generation of flat-top beams by complex amplitude modulation with a phase-only spatial light modulator

被引：20

作者：

Hendriks, Adriaan ^{[1
,2
]}

Naidoo, Darryl ^{[1
,2
]}

Roux, Filippus S. ^{[1
]}

Lopez-Mariscal, Carlos ^{[3
]}

Forbes, Andrew ^{[1
,2
,4
]}

机构：

[1] CSIR Natl Laser Ctr, POB 395, ZA-0001 Pretoria, South Africa

[2] Univ Stellenbosch, Laser Res Inst, ZA-7602 Stellenbosch, South Africa

[3] US Naval Res Lab, Washington, DC 20375 USA

[4] Univ KwaZulu Natal, Sch Phys, ZA-4000 Durban, South Africa

来源：

LASER BEAM SHAPING XIII | 2012年 / 8490卷

关键词：

Flat-top beams; spatial light modulator; complex amplitude modulation; INTENSITY PROFILE; LASER; TRANSFORMATION; DESIGN; SYSTEMS;

D O I：

10.1117/12.932224

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Phase-only spatial light modulators are now ubiquitous tools in modern optics laboratories, and are often used to generate so-called structured light. In this work we outline the use of a phase-only spatial light modulator to achieve full complex amplitude modulation of the light, i.e., in amplitude and phase. We outline the theoretical concept, and then illustrate its use with the example of the laser beam shaping of Gaussian beams into flat-top beams. We quantify the performance of this approach for the creation of such fields, and compare the results to conventional lossless approaches to flat-top beam generation.

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