Broadband Terahertz Spectroscopy of Phonon-Polariton Dispersion in Ferroelectrics
Electromagnetic waves at frequencies below the X-ray region strongly couple to the optical vibrational modes in a solid. These coupled excitations have been called phonon polaritons. The relationship of the polariton frequency versus the polariton wavevector shows a remarkable dispersion, especially...
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| Formato: | Artigo |
| Lenguaje: | Inglês |
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MDPI AG
2018-12-01
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| Colección: | Photonics |
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| Acceso en línea: | https://www.mdpi.com/2304-6732/5/4/55 |
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