Multicolor detour phase holograms based on an Al plasmonic color filter
Optics Express, ISSN: 1094-4087, Vol: 31, Issue: 2, Page: 2061-2071
2023
- 1Citations
- 4Captures
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Article Description
The remarkable advances in nanofabrication that have occurred over the last decade present opportunities for the realization of new types of holograms. In this work, for the first time to the best of our knowledge, a method for phase multicolor holograms based on nanohole arrays is described. The nanoholes are in an aluminum film that is interposed between the glass substrate and a silicon dioxide layer. The nanoholes serve as color filters for blue, green, and red wavelengths and provide the necessary phase distribution via the detour phase method. Our nanohole arrays are optimized to maximize the transmission efficiency of the red, green, and blue channels and to minimize the cross-talk between them. We design two multicolor holograms based on these filters and simulate their performance. The results show good fidelity to the desired holographic images. The proposed structure has the advantages of being very compact, of requiring only a simple fabrication method with one lithography step, and of employing materials (aluminum and silicon dioxide) that are compatible with standard CMOS technology.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85146023219&origin=inward; http://dx.doi.org/10.1364/oe.480812; http://www.ncbi.nlm.nih.gov/pubmed/36785228; https://opg.optica.org/abstract.cfm?URI=oe-31-2-2061; https://dx.doi.org/10.1364/oe.480812; https://opg.optica.org/oe/abstract.cfm?uri=oe-31-2-2061
Optica Publishing Group
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