CAJ | 학술논문

搭建了一套基于铥钬共掺光纤的激光放大系统,包含1个2μm增益开关主振荡器和一级铥钬共掺光纤放大器.获得了平均功率大于300 m W的2μm脉冲输出,放大器平均功率增益达11 dB ,放大斜率效率达30％,这些性能指标与双包层掺铥光纤放大器相当.输出脉冲重频在40 kHz时,最高脉冲能量为7.27μJ ,脉宽88 ns ,对应的峰值功率为82.6 W .放大过程中,激光光谱宽度小于0.3nm,边模抑制比大于35dB.
탑건료일투기우주화공참광섬적격광방대계통,포함1개2μm증익개관주진탕기화일급주화공참광섬방대기.획득료평균공솔대우300 m W적2μm맥충수출,방대기평균공솔증익체11 dB ,방대사솔효솔체30％,저사성능지표여쌍포층참주광섬방대기상당.수출맥충중빈재40 kHz시,최고맥충능량위7.27μJ ,맥관88 ns ,대응적봉치공솔위82.6 W .방대과정중,격광광보관도소우0.3nm,변모억제비대우35dB.
A Tm-Ho codoped fiber amplifier system is built , and it?s amplification properties are investigated . The results show that an average output power of 300 mW is obtained with an amplification gain bigger than 11 dB , w hich is comparable with that of the 793 nm pumped Tm-doped double clad fiber ,and the maximum pulse energy generated is about 7 .27 μJ with a pulse duration of 88 ns ,corresponding to a peak power of 82 .6 W at repeti-tive rate of 40 kHz . During the amplification process , gain-switching and gain-switched mode-locking are observed , the laser output enjoys a narrow linewidth of no bigger than 0 .3 nm ,and the side-mode suppression ratio is bigger than 35 dB .