报道了一台实用化的基于主振荡-功率放大(MOPA)方式工作的全光纤高重复频率脉冲激光器。以基于高速MOSFET驱动电源的调制激光二极管(LD)作为种子激光器, 采用两级串联的单模双包层光纤作为预放, 利用双包层光纤为主放。该器件可以得到重复频率高达600 kHz的窄脉冲输出。在重复频率125 kHz时, 得到脉宽10 ns, 平均功率2.4 W的激光输出。研制的激光器具有较好的稳健性, 将应用到空基的三维成像激光雷达中。

A high repetition rate Tm:Ho:LuLiF master-oscillator and polarization-maintaining (PM) Tm-doped fiber power-amplifier system is presented. A 11.3-kHz, 0.4-nm line width, 0.89-W Tm:Ho:LuLiF seed laser is developed. Using a two-stage PM Tm-doped fiber power amplifier system, 32.4-W output power is obtained with 0.4-nm line width at a central wavelength of 2058.5 nm, corresponding to 0.66-W seed laser. The laser spectrum and pulse profile are measured.