荧光指物体在外界激发下自发跃迁时发出的光信号,也就是自发辐射。测量激光材料的白发辐射的有关参数,对于研究其性能有相当重要的意义。红外荧光信号指的是荧光信号的光频处于红外区域。当信号很微弱,又是处在红外区域时,要在周围很强的红外背景下检测出来,就要利用相应的微弱信号检测系统。 Fluorescence refers to the light emitted by an object upon its spontaneous transition triggered by the outside world, that is, spontaneous emission. Measurement of laser materials, white hair radiation related parameters for the study of its performance has a very important significance. Infrared fluorescence signal refers to the fluorescent light signal in the infrared region. When the signal is very weak, but also in the infrared region, to be detected in the surrounding strong infrared background, it is necessary to use the corresponding weak signal detection system.