Journal
OPTICS EXPRESS
Volume 26, Issue 7, Pages 8916-8922Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.26.008916
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Funding
- Enterprise Ireland [CF20144622, IP20170590]
- EU European Regional Development Fund (ERDF) Programme
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A method for fabricating diffractive holographic optical diffusers is reported, allowing a high degree of control of the resulting diffuser characteristics. The method consists of recording a laser speckle pattern using a single carrier beam, with controlled speckle size and shape, in an acrylamide-based volume photopolymer. The multiple interferences that create the speckle pattern form the hologram. Results are presented verifying the diffusers are volume holographic in nature and the speckle pattern is recorded accurately in the photopolymer. Diffusers recorded by this method are analysed to characterise the optical performance of the diffusers and to illustrate their beam-shaping capabilities, particularly in producing asymmetric beam outputs. (c) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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