In this Letter, we describe spatially switched surface plasmon microscopy (ssSPM) based on two-channel momentum sampling. The performance evaluated with periodic nanowires in comparison with conventional SPM and bright-field microscopy shows that the resolution of ssSPM is enhanced by almost 15 times over conventional SPM. ssSPM provides an extremely simple way to attain diffraction limit in SPM and to go beyond for super-resolution in label-free microscopy techniques.

中文翻译：

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通过空间光开关进行表面等离激元显微镜检查，可实现无标签成像，并具有更高的分辨率

在这封信中，我们描述了基于两通道动量采样的空间转换表面等离子体显微镜（ssSPM）。与常规SPM和明场显微镜相比，使用周期性纳米线评估的性能表明ssSPM的分辨率比常规SPM提高了近15倍。ssSPM提供了一种非常简单的方法来达到SPM中的衍射极限，并超越无标记显微镜技术的超分辨率。