Lecaplain C, Baumgartl M, Schreiber T, Hideur A
UMR 6614 CORIA, Université de Rouen, Saint Etienne du Rouvray, France.
Opt Express. 2011 Dec 19;19(27):26742-51. doi: 10.1364/OE.19.026742.
We report on the generation of high-energy pulses in an all normal dispersion photonic-crystal fiber laser. Two mode-locking techniques with and without passive spectral filtering are studied both numerically and experimentally to address a roadmap for energy scaling. It is found that high-contrast passive modulation is a very promising mode-locking technique for energy scaling in dissipative-soliton laser. Moreover, this technique does not need any additional spectral filtering than the limited gain bandwidth to stabilize high-energy ultrashort pulses. The presented laser generates 110 nJ chirped pulses at 57 MHz repetition rate for an average power of 6.2 W. The output pulses could be dechirped close to the transform-limited duration of 100 fs.
我们报道了全正色散光子晶体光纤激光器中高能脉冲的产生。对有无无源光谱滤波的两种锁模技术进行了数值和实验研究，以制定能量缩放路线图。结果发现，高对比度无源调制是耗散孤子激光器中非常有前景的能量缩放锁模技术。此外，该技术除了有限的增益带宽外，不需要任何额外的光谱滤波来稳定高能超短脉冲。所展示的激光器以57 MHz的重复频率产生110 nJ的啁啾脉冲，平均功率为6.2 W。输出脉冲可以进行去啁啾处理，接近100 fs的变换极限持续时间。
