Driben Rodislav, Zhavoronkov Nickolai
Max-Born-Institut for Nonlinear Optics and Short Pulse Spectroscopy, Max-Born-Str 2a, D-12489 Berlin, Germany.
Opt Express. 2010 Aug 2;18(16):16733-8. doi: 10.1364/OE.18.016733.
Experiments and numerical simulation were performed for verification of the role of femtosecond pulse chirp for supercontinuum generation in photonic crystal fiber. We demonstrate that injection of high power negatively chirped pulses near zero dispersion point brings an advantage over positively chirped pulses resulting in additional collision between solitons and in development of a significantly broader spectrum. Coupling between Raman induced solitons and dispersive waves generated by higher order dispersion was proven to be the key mechanism behind the results.
为了验证飞秒脉冲啁啾在光子晶体光纤中产生超连续谱的作用，进行了实验和数值模拟。我们证明，在零色散点附近注入高功率负啁啾脉冲比正啁啾脉冲具有优势，这会导致孤子之间产生额外的碰撞，并产生明显更宽的光谱。拉曼诱导孤子与高阶色散产生的色散波之间的耦合被证明是这些结果背后的关键机制。
