研制了激光清洗用高能量纳秒脉冲掺镱光纤激光器,该激光器采用主动调Q技术产生纳秒脉冲,脉冲经两级主振荡功率放大器(MOPA)后可以获得高的能量和平均功率。在重复频率为100 kHz时,激光器输出的平均功率最高可达302 W,脉冲宽度为203 ns,单脉冲能量为3 mJ,光光转换效率为84%。利用该激光器进行了激光除锈实验,实验结果证明该激光器稳定可靠,可满足激光除锈、激光除漆等多种应用的需求。

High energy nanosecond pulsed ytterbium-doped fiber laser is developed. The laser utilizes active Q-switching technology to generate nanosecond pulses, and the pulses can obtain high energy and average power after it passes through two-stage master oscillator power amplifier (MOPA) system. When the pulse repetition frequency is 100 kHz, the maximum average power of laser pulses is 302 W, pulse duration is 203 ns, single pulse energy is 3 mJ and the optical-to-optical conversion efficiency is 84%. Laser rust removal experiment is carried out using the laser, the experimental results show that the laser is stability, and the laser can meet the laser rust removal, laser paint removel and many other applications.