Rigaud Ph, Kermene V, Bouwmans G, Bigot L, Desfarges-Berthelemot A, Labat D, Le Rouge A, Mansuryan T, Barthélémy A
XLIM Institut de Recherche, UMR 7252, Université de Limoges CNRS, Limoges, France.
Opt Express. 2013 Jun 3;21(11):13555-63. doi: 10.1364/OE.21.013555.
A compact scheme is demonstrated for amplification and synthesis of ultrashort pulses by fiber amplifiers. Femtosecond pulses are split in 12 different spectral bands which are amplified separately in the 12 cores of a multicore ytterbium doped fiber. Combining the amplifier outputs together with the intensity and phase management of the spectral bands lead to short pulse synthesis with adjustable pulse shape. The scheme gave an x 92 enhancement in amplified power before the onset of nonlinear effects by comparison with standard stretcher free amplification in a single core fiber.
展示了一种通过光纤放大器放大和合成超短脉冲的紧凑方案。飞秒脉冲被分成12个不同的光谱带，这些光谱带在多芯掺镱光纤的12个纤芯中分别放大。将放大器输出与光谱带的强度和相位管理相结合，可实现具有可调脉冲形状的短脉冲合成。与单芯光纤中无标准展宽器的放大相比，该方案在非线性效应开始之前，放大功率提高了92倍。
