报道了基于半导体纳秒调制技术的百瓦级、线性偏振掺铥光纤激光器。该激光器采用调制半导体激光器作为种子源，脉冲宽度为20 ns，重复频率在200 kHz~1 MHz范围内连续可调。当重复频率为200 kHz时，经主功率振荡放大器(MOPA)得到100 W 平均功率输出。最高输出功率时，由于存在增益整形机制，脉冲宽度由20 ns 降低为6 ns。相应的峰值功率达到83 kW，单脉冲能量为0.5 mJ，最高输出功率下系统输出偏振消光比达到17 dB。据本文所知，这是首次报道基于半导体调制技术的百瓦级、纳秒脉宽、线偏振的掺铥光纤激光器。

High average power linearly- polarized nanosecond- pulsed, modulated diode seeded thuliumdoped fiber laser based on master oscillator power amplifier (MOPA) system is reported. The modulated seed laser delivers 20 ns pulses with tunable repetition rate from 200 kHz to 1 MHz. The MOPA yields 100 W average output power at 200 kHz repetition rate. The pulse duration reduces to 6 ns during amplification due to gain reshaping effect, which lead to a higher peak power of 83 kW with pulse energy of 0.5 mJ. To the best of our knowledge, this is the first demonstration of average output power exceeding 100 W from a linear polarization, thulium doped fiber laser using modulated diode as a seed.