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Topological insulator: Bi2Se3/polyvinyl alcohol film-assisted multi-wavelength ultrafast erbium-doped fiber laser

guobo94656329 添加于 2017/12/3 18:10:10  28次阅读 | 0次推荐 | 0个评论

We experimentally demonstrate a multi-wavelength ultrafast erbium-doped fiber laser incorporating a lm-scale topological insulator: Bi2Se3/Polyvinyl Alcohol film as both an excellent saturable absorber for mode-locking and a high-nonlinear medium to induce a giant third order optical nonlinear effect for mitigating the mode competition of erbium-doped fiber laser and stabilizing the multi-wavelength oscillation. By properly adjusting the pump power and the polarization state, the single-, dual-, triple-, four-wavelength mode-locking pulse could be stably initiated. For the four-wavelength operation, we obtain its pulse width of 22 ps and a fundamental repetition rate of 8.83 MHz. The fiber laser exhibits the maximum output power of 9.7 mW with the pulse energy of 1.1 nJ and peak power of 50W at the pump power of 155 mW. Our study shows that the simple, stable, low-cost multi-wavelength ultrafast fiber laser could be applied in various potential fields, such as optical communication, biomedical research, and radar system.

作 者:B. Guo, Y. Yao, Y. F. Yang, Y. J. Yuan, R. L. Wang, S. G. Wang, and B. Yan
期刊名称: J. Appl. Phys.
期卷页: 12 February 2015 第117卷 第6期 063108页
学科领域:信息科学 » 光学和光电子学 » 光子与光电子器件
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关键词: Topological insulator: Bi2Se3/polyvinyl alcohol film; multi-wavelength; ultrafast; erbium-doped fiber laser
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