Journal
OPTICS EXPRESS
Volume 18, Issue 16, Pages 16646-16662Publisher
Optica Publishing Group
DOI: 10.1364/OE.18.016646
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Funding
- ARO MURI [56154-PH-MUR, 50342-PH-MUR]
- IIP SB RAS [113]
- RFFS [09-01-00352-a]
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We present a detailed theoretical description of a broadband omnidirectional light concentrator and absorber with cylinder geometry. The proposed optical trap captures nearly all the incident light within its geometric cross-section, leading to a broad range of possible applications from solar energy harvesting to thermal light emitters and optoelectronic components. We have demonstrated that an approximate lamellar black-hole with a moderate number of homogeneous layers, while giving the desired ray-optical performance, can provide absorption efficiencies comparable to those of ideal devices with a smooth gradient in index. (C) 2010 Optical Society of America
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