Photonic Band Gaps in One-Dimensionally Ordered Cold Atomic Vapors
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
19/04/2012
19/04/2012
2011
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| Resumo |
We experimentally investigate the Bragg reflection of light at one-dimensionally ordered atomic structures by using cold atoms trapped in a laser standing wave. By a fine-tuning of the periodicity, we reach the regime of multiple reflection due to the refractive index contrast between layers, yielding an unprecedented high reflectance efficiency of 80%. This result is explained by the occurrence of a photonic band gap in such systems, in accordance with previous predictions. Alexander von Humboldt Foundation (Germany) Deutsche Forschungsgemeinschaft - DFG REA[PIRSES-GA-2010-268717] |
| Identificador |
PHYSICAL REVIEW LETTERS, v.106, n.22, 2011 0031-9007 http://producao.usp.br/handle/BDPI/16410 10.1103/PhysRevLett.106.223903 |
| Idioma(s) |
eng |
| Publicador |
AMER PHYSICAL SOC |
| Relação |
Physical Review Letters |
| Direitos |
restrictedAccess Copyright AMER PHYSICAL SOC |
| Palavras-Chave | #ANDERSON LOCALIZATION #SPONTANEOUS EMISSION #BRAGG-DIFFRACTION #OPTICAL LATTICES #LIGHT #COHERENCE #DYNAMICS #INDEX #Physics, Multidisciplinary |
| Tipo |
article original article publishedVersion |
