从对线形腔掺镱双包层光纤激光器的输出特性进行的研究,得到了激光器泵浦阈值功率、输出光功率的表达式,并重点比较了有损耗和无损耗时光纤激光器的输出功率随光纤长度、后腔镜反射率、泵浦功率变化的关系,得出:由于损耗的存在,激光输出功率会有一定的下降,并且这个下降会随着光纤长度、后控镜反射率、泵浦功率的变大而更加显著。 Based on the research on the output characteristics of the YAG double-clad fiber laser with linear cavity, the expressions of the threshold power and the output power of the laser are obtained. The output power of the fiber laser with loss and loss is compared with that of the fiber Length, back-mirror reflectivity and pump power. It is concluded that the output power of laser will decrease due to the loss, and the drop will decrease with the length of fiber, the reflectivity of back mirror, the pump power Larger and more pronounced.