27 September 2016 Thulium-doped all-fiber mode-locked laser synchronously pumping by a fiber laser
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We demonstrate a thulium-doped all fiber actively mode-locked laser by synchronously pumping without electronic modulator. A mode-locked fiber laser operating at 1550 nm based on nonlinear polarization rotation (NPR) is innovatively utilized as the pulsed pump. Through cavity length matching, stable mode-locking that operate at 1891.25 nm is achieved with a spectral width of 0.52 nm at 3 dB. The repetition rate is 11.59 MHz with an estimated pulse duration less than 125 ps.
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Gen Li, Yangyang Hu, Ke Yan, Chun Zhang, Junyi Zhang, Chun Gu, Lixin Xu, "Thulium-doped all-fiber mode-locked laser synchronously pumping by a fiber laser", Proc. SPIE 9950, Laser Beam Shaping XVII, 99500R (27 September 2016); doi: 10.1117/12.2236649; https://doi.org/10.1117/12.2236649


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