Fornasari Lucia, Floris Francesco, Patrini Maddalena, Comoretto Davide, Marabelli Franco
Department of Physics, University of Pavia, Via Bassi 6, 27100 Pavia, Italy.
Department of Chemistry and Industrial Chemistry, University of Genova, via Dodecaneso 31, 16146 Genova, Italy.
Phys Chem Chem Phys. 2016 May 18;18(20):14086-93. doi: 10.1039/c5cp07660a.
An all-polymer photonic structure constituted by a distributed Bragg reflector topped with an ultrathin fluorescent polymer film has been studied. A Bloch surface wave resonance has been exploited to improve pumping efficiency. A strongly polarization and angle dependent fluorescence signal is found with respect to the light pumping beam and the emitted wavelength. Matching the most favorable condition for the pump coupling and the collection geometry, the signal obtained from the structure appears to be two orders of magnitude larger than the one of the bare emitting film.
研究了一种全聚合物光子结构，它由顶部覆盖超薄荧光聚合物薄膜的分布式布拉格反射器构成。利用布洛赫表面波共振提高泵浦效率。发现相对于光泵浦光束和发射波长，荧光信号具有强烈的偏振和角度依赖性。在匹配泵浦耦合和收集几何结构的最有利条件下，从该结构获得的信号似乎比裸发射薄膜的信号大两个数量级。
