Goetz Sebastian, Li Donghai, Kolb Verena, Pflaum Jens, Brixner Tobias
Opt Express. 2018 Feb 19;26(4):3915-3925. doi: 10.1364/OE.26.003915.
We have developed coherent two-dimensional (2D) fluorescence micro-spectroscopy which probes the nonlinear optical response at surfaces via fluorescence detection with sub-micron spatial resolution. This enables the investigation of microscopic variations in heterogeneous systems. An LCD-based pulse shaper in 4f geometry is used to create collinear trains of 12-fs visible/NIR laser pulses in the focus of an NA = 1.4 immersion-oil microscope objective. We demonstrate the capabilities of the new method by presenting 2D spectra, analyzed via phase cycling, as a function of position of selected sub-micron regions from a laterally nanostructured polycrystalline thin film of fluorinated zinc phthalocyanine (FZnPc).
我们开发了相干二维（2D）荧光显微光谱技术，该技术通过具有亚微米空间分辨率的荧光检测来探测表面的非线性光学响应。这使得研究异质系统中的微观变化成为可能。基于液晶的4f几何脉冲整形器用于在NA = 1.4浸油显微镜物镜的焦点处产生12飞秒可见/近红外激光脉冲的共线序列。我们通过展示二维光谱来证明这种新方法的能力，该二维光谱通过相位循环进行分析，是氟化锌酞菁（FZnPc）横向纳米结构多晶薄膜中选定亚微米区域位置的函数。
