Producing true-color rainbows with patterned multi-layer liquid-crystal polarization gratings
| Autor: | Frans Snik, Leandra Brickson, Daan Roosegaarde, Sebastiaan Groenhuijsen, Chris Kievid, Kathryn J. Hornburg, Michiel Rodenhuis, Michael J. Escuti, Jihwan Kim |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Diffraction
Materials science business.industry Physics::Optics Rainbow 02 engineering and technology Grating 021001 nanoscience & nanotechnology Polarization (waves) Diffraction efficiency 01 natural sciences Electronic Optical and Magnetic Materials 010309 optics Optics Liquid crystal 0103 physical sciences Bidirectional reflectance distribution function 0210 nano-technology business Circular polarization |
| Zdroj: | Optical Materials Express, 9(4), 1583-1589 Optical Materials Express |
| ISSN: | 2159-3930 |
| DOI: | 10.1364/ome.9.001583 |
| Popis: | We present the technical design of the art installation Rainbow Station, that projects a 40-m diameter true-color rainbow. The core technology is comprised of a patterned polarization grating that produces the rainbow with the correct shape and correct color order. We achieve an effective grating period as small as 1.55 µm, and obtain high diffraction efficiency over the entire visible spectral range thanks to a multi-layer liquid-crystal implementation. The -1 spectral order is suppressed by circular polarization filtering. |
| Databáze: | OpenAIRE |
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