红外光探针是扫描近场红外显微镜 (SNIM)中的关键部件 ,由于探针的种类和材料不同 ,制作的方法也不同 .一般制作光纤探针有两种方法 ,即热拉伸法和化学腐蚀法 .这里叙述了一种化学腐蚀方法 ,介绍了怎么去除砷硒碲中红外光纤的聚酰胺表层和硫化硒夹层 ,以及芯层腐蚀成针尖状的具体方法和过程 ,并对短锥针探针制法进行了探索 .最后用此探针在近场范围内探测了氮化镓样品的自由电子激光 (FEL)反射谱 The infrared light probe is a key component in the scanning near-field infrared microscope (SNIM), and the method is different due to the different types and materials of the probe. There are two methods for fabricating a fiber probe, namely the hot stretching method and the chemical Corrosion method. Here describes a chemical etching method, describes how to remove the arsenic, selenium telluride mid-infrared fiber polyamide surface and selenium sulfide interlayer, as well as the core corrosion into needle-like concrete methods and processes, and short cone probe Pin method was explored.Finally, the free-electron laser (FEL) reflectance spectra of gallium nitride samples were detected in the near field