科研之友
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摘要
We present a high average power narrowband-pulsed fiber master oscillator power amplifier (MOPA) at 1.971 mu m. The linewidth of the pulse trains is broadened to similar to 1.5 GHz via phase modulation. The repetition rates are 3 and 5 MHz, respectively. The output power of pulse train with 3 MHz repetition rate is 192 W, and the pulsewidth is 51 ns, corresponding to a peak power of 1.11 kW and a pulse energy of 62 mu J. The output power of pulse train with 5 MHz repetition rate is 209 W, and the pulsewidth is 46 ns, corresponding to a peak power of 0.86 kW and a pulse energy of 42 mu J. Higher output power can be achieved by narrowing the pulsewidth to several nanoseconds. To the best of our knowledge, this is the first demonstration on high-power narrowband nanosecond-pulsed MOPA near 2 mu m with an average power exceeding 200 W.
- 出版日期2015-7-15
- 单位中国人民解放军国防科学技术大学
