Burst-mode pulse generation in passively mode-locked all-fiber green/orange lasers at 543 nm and 602 nm

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作者
QIUJUN RUAN [1 ,2 ]
JINHAI ZOU [1 ,2 ]
CHUNNA FENG [1 ]
TINGTING CHEN [1 ,2 ]
HANG WANG [1 ,2 ]
ZHIPENG DONG [1 ,2 ]
ZHENGQIAN LUO [1 ,2 ]
机构
[1] Fujian Key Laboratory of Ultrafast Laser Technology and Applications, School of Electronic Science and Engineering, Xiamen University
[2] Shenzhen Research Institution of Xiamen
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TN248 [激光器];
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摘要
We report on the experimental realization of, to the best of our knowledge, the first green and orange passively mode-locked all-fiber lasers. Stable mode-locking in the burst-pulse status is achieved at the wavelengths of543.3 nm and 602.5 nm. The figure-9 cavity comprises the fiber end-facet mirror, gain fiber(Ho3+:ZBLAN fiber or Pr3+∕Yb3+:ZBLAN fiber), and fiber loop mirror(FLM). The FLM with long 460 HP fiber is not only used as an output mirror, but also acts as a nonlinear optical loop mirror for initiating visible-wavelength mode-locking.The green/orange mode-locked fiber lasers with the fundamental repetition rates of 3.779/5.662 MHz produce long bursts containing ultrashort pulses with the 0.85/0.76 GHz intra-burst repetition rates, respectively. The ultrashort intra-burst pulses stem from the dissipative four-wave-mixing effect in the highly nonlinear FLM as well as the intracavity Fabry–Perot filtering. Long bursts of 22.2/11.6 ns with ultrashort pulses of 87/62 ps are obtained in our experiment. The visible-wavelength passively mode-locked lasers in an all-fiber configuration and burst-mode would represent an important step towards miniaturized ultrafast fiber lasers and may contribute to the applications in ablation-cooling micromachining, biomedicine imaging, and scientific research.
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页码:1231 / 1238
页数:8
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