Doubly slanted layer structures in holographic gelatin emulsions: solar concentrators
| Autor: | Po Shan Chan, Caiming Sun, Choi Wing Ho, Jenny Hung, Wing Yim Tam |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Diffraction
Materials science business.industry Mathematics::History and Overview Energy conversion efficiency Holography Physics::Optics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Wavelength Optics Interference (communication) law Photovoltaics Light beam Mathematics::Differential Geometry Photonics business |
| Zdroj: | Journal of Optics. 12:045104 |
| ISSN: | 2040-8986 2040-8978 |
| DOI: | 10.1088/2040-8978/12/4/045104 |
| Popis: | We have fabricated doubly slanted layer structures in holographic gelatin emulsions using a double-exposure two-beam interference from two light sources with different wavelengths. The doubly slanted layers, with different spacings and overlapping with each other, are fabricated such that they are slanted in opposite directions making a 30° angle with the holographic plate. The doubly slanted layer structures exhibit photonic stop bands corresponding to the two layered structures. More importantly, diffracted light beams from the slanted layers travel in different directions and emerge, through internal reflections, at the opposite edges of the gelatin plate. The doubly slanted layer structures could be used as solar concentrators such that sunlight is separated into different components and steered directly to photovoltaics with the corresponding wavelength sensitivities to enhance energy conversion efficiency. |
| Databáze: | OpenAIRE |
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