我们将多模半经典激光理论运用到注入锁相激光器的线宽压缩和频率选择问题中,其目的（上日）在根据激活介质的光谱性质,估计窄带注入信号作用下的宽带激光器的特性。得出了均匀增宽和非均匀增宽激光器单模运转所需注入信号强度的分析表达式,适用于小信号和强信号两种状态·在一定的实验条件下,发现注入锁相非均匀增宽激光器与均匀增宽激光器的特性有明显的差别· We apply the multimode semiclassical laser theory to the linewidth compression and frequency selection of injected phase-locked lasers. The purpose of this (last day) is to estimate the characteristics of broadband lasers under the effect of narrow-band injection signals based on the spectral properties of the active medium. The analytical expression of the injected signal intensity required for single-mode operation of uniformly widened and non-uniform widened lasers is obtained, which is suitable for both small and strong signals. Under certain experimental conditions, it is found that the injected phase-locked non- There is a clear difference between the characteristics of a wide-band laser and an even-widened laser