24 October 2017 Passively q-switched fiber lasers based on concave gold bipyramids saturable absorbers
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Proceedings Volume 10457, AOPC 2017: Laser Components, Systems, and Applications; 104572L (2017) https://doi.org/10.1117/12.2284911
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China
Abstract
In our experiment, a kind of novel gold nanoparticles – concave gold bipyramids (CAuBPs) withlarge electromagnetic-field enhancement and broader plasmonic tuning rangehave been used as a saturable absorber (SA). Passively Q-switched thulium-doped and ytterbium-doped fiber lasers have been demonstrated based on CAuBPs SAs, the longitudinal surface plasmon resonance (LSPR) bands of which are located at 1 μm and 2 μm. In the 1 μm region, the maximum average output power of 9.61 mW is obtained with the shortest pulse width of 1.83 μs at the pulse repetition rate of 97.47 kHz.In the 2μm waveband, 9.72 mW average output power is obtained with the minimum pulse width of 4.56μs at the repetition rate of 19.9 kHz. To the best of our knowledge, it’s the first time that CAuBP has been used as SA, which verifies the saturable absorption properties of CAuBPs in the infrared range experimentally.
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Jiaxin Song, Hanshuo Wu, Jian Wu, Jiangming Xu, Pu Zhou, "Passively q-switched fiber lasers based on concave gold bipyramids saturable absorbers", Proc. SPIE 10457, AOPC 2017: Laser Components, Systems, and Applications, 104572L (24 October 2017); doi: 10.1117/12.2284911; https://doi.org/10.1117/12.2284911
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