期刊
PHOTONICS RESEARCH
卷 6, 期 9, 页码 830-836出版社
OPTICAL SOC AMER
DOI: 10.1364/PRJ.6.000830
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资金
- National Natural Science Foundation of China (NSFC) [61575164, 61575088, 11674269, 61475129]
- National Key Research and Development Program of China [2016YFB1102202]
- Natural Science Foundation of Fujian Province of China [2018J01108]
- Xiamen University [20720180082]
We report on diode-pumped Er:Y2O3 ceramic lasers at about 2.7 mu m in the tunable continuous-wave, selfQ- switching and tungsten disulfide (WS2)-based passively Q-switching regimes. For stable self-Q-switched operation, the maximum output power reaches 106.6 mW under an absorbed power of 2.71 W. The shortest pulse width is measured to be about 1.39 mu s at a repetition rate of 26.7 kHz at maximum output. Using a spin-coated WS2 as a saturable absorber, a passively Q-switched Er:Y2O3 ceramic laser is also realized with a maximum average output power of 233.5 mW(for the first time, to the best of our knowledge). The shortest pulse width decreases to 0.72 mu s at a corresponding repetition rate of 29.4 kHz, which leads to a pulse energy of 7.92 mu J and a peak power of 11.0 W. By inserting an undoped YAG thin plate as a Fabry - Perot etalon, for the passive Q switching, wavelength tunings are also demonstrated at around 2710, 2717, 2727, and 2740 nm. (C) 2018 Chinese Laser Press
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