用于测距的掺镱脉冲光纤激光器的输出特性

Output characteristics of pulse ytterbium doped fiber laser for distance measurement

研究了用于测距的被动调Q掺镱光纤脉冲激光器的输出特性,仿真对比了可饱和吸收体长度以及增益光纤长度对输出功率的影响.结果表明:在抽运源功率为5 W的条件下,输出脉冲宽度为0.8μs,脉冲峰值功率为26 W,平均功率为2 W,脉冲能量为20μJ.在物体反射率为10%,探测距离为200 m,以及大气透过率为100%的条件下,返回最小功率为3.9×10^(-7) W.

In this paper,the output characteristics of passive Q-switched ytterbium doped pulse fiber lasers for distance measurement was studied.Besides,the effects of saturable absorber length and gain fiber length on output power were studied by simulation.Under the condition that the pump source power was 5 W,the simulation results showed that the output pulse width was 0.8 μs,the pulse peak power was 26 W,the average power was 2 W and the pulse energy was 20 μJ.When the object reflectivity was 10%,and when the detection distance was 200 m,and when the atmospheric transmittance was 100%,the minimum power returned was 3.9×10-7 W.