Photoluminescence characteristics of dye-doped polymer nanofibers excited by surface plasmon polaritons
Photoluminescence characteristics of dye-doped polymer nanofibers excited by surface plasmon polaritons
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表面等离子体激元激发染料掺杂聚合物纳米纤维的光致发光特性
DOI：
10.1117/12.2023458
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
他3名
中科院分区：
文献类型：
--
作者：
Ryohei Kaminose;Yuya Ishii;他3名
偶氮染料掺杂聚合物的光栅刻划是一个有趣的现象，因为它的高衍射性能和适用于实时三维显示。虽然这些材料中的一些在没有外部电场的情况下进行了研究，在以前的研究中具有对称的光学对准，他们往往表现出从照射光束形成的干涉条纹的折射率的周期性调制的相移，导致两个耦合光束之间的不对称的能量交换。这种行为的机理通常被归因于由反-顺异构化引发的分子运动，但其细节仍然未知。因此，对该过程的时间演变及其转化为物理意义的研究是必要的。为了研究光栅铭文和相移的演变，人们开发了多种方法。本文分析了Kogelnik提出的耦合波方程，导出了适用于任意相位关系的相位光栅和振幅光栅系统的一般解。我们指出，基于该方程的分析可以直接证明相位光栅和振幅光栅之间的相移是否存在。这种方法被施加到条纹图案刻在厚膜的PMMA掺杂偶氮咔唑染料，观察到的信号表明两种类型的光栅之间的相位偏差。
Grating inscription in azo-dye doped polymers is an interesting phenomenon because of its high diffraction performance and applicability to real-time 3D displays. Although some of these materials were investigated under no external electric field with symmetric optical alignments in preceding studies, they often showed a phase shift of periodic modulation of refractive index from the interference fringe formed by irradiation beams, resulting in asymmetric energy exchange between two coupled beams. The mechanism of the behavior has been usually attributed to the molecular motions triggered by trans-cis isomerization, but their details are still unknown. Therefore, studies on temporal evolution of the process and their translation into physical meaning are necessary. In order to investigate the evolution of grating inscription and phase shift, several methods have been developed. In this study, we analyzed the coupled wave equations proposed by Kogelnik, and derived general solution applicable to the system with both phase and amplitude gratings with arbitrary phase relationship. We showed that the analysis based on the equation can give a direct evidence of the phase shift between the phase and amplitude gratings if it exists. This method was applied to the fringe pattern inscribed in thick films of PMMA doped with an azo-carbazole dye, showing that observed signals indicated the phase deviation between two types of gratings.
电纺聚合物纳米纤维中的光波导
DOI：
10.1088/1742-6596/433/1/012006
发表时间：
2013
期刊：
Journal of Physics: Conference Series
影响因子：
--
作者：
Yuya Ishii;Ryohei Kaminose;and Mitsuo Fukuda
通讯作者：
and Mitsuo Fukuda
电纺发光单纳米纤维的真实光致发光光谱及其评估
DOI：
--
发表时间：
2012
期刊：
影响因子：
--
作者：
Yuya Ishii;Hideyuki Murata;Mitsuo Fukuda
通讯作者：
Mitsuo Fukuda