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Broadband parametric wavelength conversion at 1 μm with large mode area fibers

机译:大模面积光纤在1μm的宽带参数波长转换

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摘要

Fiber-optic parametric wavelength conversion (PWC) below the zero-dispersion wavelength of silica is typically constrained by the requirement of a small, tightly confined mode with anomalous dispersion to achieve phase matching. This limits the ability to power scale PWC at arbitrary wavelengths. However, the constraint is lifted for higher-order modes. We demonstrate PWC in the 1 μm band via degenerate four-wave mixing pumped in a large effective area (>600 μm~2) LP_(0,7) mode of a double-clad fiber. We obtain up to 25% conversion in to the Stokes line with 0.5 ns pump pulses, corresponding to ~20 kW peak power at the converted wavelength.
机译:低于二氧化硅零色散波长的光纤参量波长转换(PWC)通常受具有异常色散的小且紧密限制的模式的限制,以实现相位匹配。这限制了在任意波长下对PWC进行功率缩放的能力。但是,对于高阶模式取消了约束。我们通过在双包层光纤的大有效面积(> 600μm〜2)LP_(0,7)模式下泵浦的简并四波混频演示了1μm波段的PWC。在0.5 ns的泵浦脉冲下,我们获得了多达25%的斯托克斯线转换,相当于在转换波长下约20 kW的峰值功率。

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