Fan Yang, Wang Bing, Wang Kai, Long Hua, Lu Peixiang
Opt Lett. 2014 Jun 15;39(12):3371-3. doi: 10.1364/OL.39.003371.
We theoretically investigate the plasmonic Talbot effect in monolayer graphene sheet arrays (MGSAs) when surface plasmon polaritons (SPPs) between graphene experience weak coupling. The Talbot effect occurs only when the incident field has a pattern with a few selected periods. The Talbot distance is found to decrease exponentially with the decreasing period of the MGSA and can be as small as 1/20 of the incident wavelength. In addition, the Talbot distance can be further reduced by increasing the chemical potential of graphene or operating at longer wavelengths.
我们从理论上研究了单层石墨烯片阵列（MGSAs）中表面等离激元极化激元（SPPs）在石墨烯间经历弱耦合时的表面等离激元塔尔博特效应。塔尔博特效应仅在入射场具有少数选定周期的图案时才会出现。发现塔尔博特距离随着MGSAs周期的减小而呈指数下降，并且可以小至入射波长的1/20。此外，通过增加石墨烯的化学势或在更长波长下操作，可以进一步减小塔尔博特距离。
