光参量啁啾脉冲放大(OPCPA)技术是有望实现大型超高功率超短脉冲激光装置的关键技术。但是,参量荧光仍然是影响超短脉冲信噪比的重要因素。回顾了近半个世纪以来关于OPCPA系统中参量荧光的理论和实验研究,就其产生的机理进行了讨论,总结出影响其空间模式和光谱分布特性的参量。在此基础上,分别从注入信号光能量、饱和与过饱和放大等方面总结了参量荧光的抑制方式。通过上述方法能够有效提高OPCPA系统的信噪比,从而为高质量物理实验提供条件。 Optical parametric chirped pulse amplification (OPCPA) is a key technology that is expected to realize large-scale ultrahigh-power ultra-short pulse laser devices. However, parametric fluorescence is still an important factor affecting the SNR of ultrashort pulses. The theoretical and experimental studies on the parametric fluorescence in the OPCPA system have been reviewed in the past half century. The mechanism of the fluorescence in the OPCPA system has been discussed. The parameters affecting the spatial mode and the spectral distribution have been summarized. On this basis, the suppression methods of parametric fluorescence are summarized respectively from energy of injected signal light, saturation and supersaturation amplification. The above method can effectively improve the signal-to-noise ratio of the OPCPA system, thus providing the conditions for high-quality physics experiments.