Q-switched dissipative soliton resonance (DSR) operation in a germanium telluride (GeTe) based erbium-doped fiber laser is investigated experimentally. The modulation depth of the GeTe based saturable absorber is about 12.3%. For the Q-switched envelope of the DSR operation in this laser, its repetition rate increases monotonically from 6.95 to 14.09 kHz and full-width at half-maximum decreases from 24.46 to 18.37 μs when pump power changes from 39.1 to 101.1 mW. With increase of pump power, the width of DSR pulse increases from 13.3 to 20.7 ns, and the average output power varies from 1.1 to 2.1 mW. The highest average single-pulse energy of DSR is calculated as 2.44 nJ at pump power of 101.1 mW. This result show that Q-switched DSR operation can be obtained in a nanocrystal based fiber laser, which will broaden the application of nanocrystals in fiber lasers.

实验研究了基于碲化锗 (GeTe) 的掺铒光纤激光器中的 Q 开关耗散孤子共振 (DSR) 操作。GeTe 基可饱和吸收体的调制深度约为 12.3%。对于该激光器中 DSR 操作的 Q 开关包络，当泵浦功率从 39.1 mW 变为 101.1 mW 时，其重复率从 6.95 kHz 单调增加到 14.09 kHz，半峰全宽从 24.46 μs 减小到 18.37 μs。随着泵浦功率的增加，DSR脉冲宽度从13.3 ns增加到20.7 ns，平均输出功率从1.1到2.1 mW变化。DSR 的最高平均单脉冲能量计算为 2.44 nJ，泵浦功率为 101.1 mW。该结果表明可以在基于纳米晶体的光纤激光器中获得 Q 开关 DSR 操作，