Development of electromagnetic radiation source using interaction of electron beam and surface plasmon

我们尝试了利用电子束沿金属衍射光栅表面运行时产生表面等离子体作为光的方法来开发电磁辐射源。由表面等离子体产生的光辐射波长比史密斯-珀塞尔辐射的波长长。此外，在有机电致发光器件中，存在金属电极与有机薄膜界面表面等离子体的光吸收问题。在金属界面上形成的表面粗糙度使表面等离子体以光的形式散射。我们通过实验观察到，这种表面粗糙度效应可以增强染料掺杂有机膜向空气侧的光发射。

We tried the development of electromagnetic radiation source using the method taken out as light by generating surface plasmons when the electron beam runs along the surface of metallic diffraction gratings. The optical radiations caused by the generation of surface plasmons were observed in wavelengths that were longer than the Smith-Purcell radiation. Moreover, in the organic EL devices, there is a problem of the optical absorption by surface plasmons in the interface of a metal electrode and an organic film. Surface roughness formed on the metal interface scatters the surface plasmons as light. We experimentally observed that the emission of light to air side from dye doped organic film can be enhanced with this surface roughness effect.