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Frequency converter...
Frequency converter implementing an optical analogue of the cosmological redshift
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Ginis, Vincent (författare)
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- Tassin, Philippe, 1982 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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Craps, Ben (författare)
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visa fler...
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Veretennicoff, Irina (författare)
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(creator_code:org_t)
- 2010
- 2010
- Engelska.
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Ingår i: Optics Express. - 1094-4087 .- 1094-4087. ; 18:5, s. 5350-5355
- Relaterad länk:
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- According to general relativity, the frequency of electromagnetic radiation is altered by the expansion of the universe. This effect-commonly referred to as the cosmological redshift-is of utmost importance for observations in cosmology. Here we show that this redshift can be reproduced on a much smaller scale using an optical analogue inside a dielectric metamaterial with time-dependent material parameters. To this aim, we apply the framework of transformation optics to the Robertson-Walker metric. We demonstrate theoretically how perfect redshifting or blueshifting of an electromagnetic wave can be achieved without the creation of sidebands with a device of finite length.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- frequency conversion
- transformation optics
- Robertson-Walker
- gravitational redshift
- gravitational analogue
- metamaterials
- time-dependent metamaterial
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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