Abeeluck Akheelesh K, Headley Clifford, Jørgensen Carsten G
OFS Laboratories, 25 Schoolhouse Road, Somerset, New Jersey 08873, USA.
Opt Lett. 2004 Sep 15;29(18):2163-5. doi: 10.1364/ol.29.002163.
High-power supercontinua are demonstrated in highly nonlinear, dispersion-shifted fibers with a continuous-wave Raman fiber laser. Supercontinuum growth is experimentally studied under different combinations of fiber length and launch power to show output powers as high as 3.2 W and bandwidths greater than 544 nm. Modulation instability (MI) is observed to seed spectral broadening at low launch powers, and the interplay between MI and stimulated Raman scattering plays an important role in the growth of the continuum at high launch powers. The effect on continuum generation of parametric four-wave mixing coupled with the higher-order dispersion properties of the fiber is investigated.
利用连续波拉曼光纤激光器在高非线性、色散位移光纤中实现了高功率超连续谱。通过实验研究了在不同光纤长度和泵浦功率组合下超连续谱的增长情况，结果表明输出功率高达3.2 W，带宽大于544 nm。观察到调制不稳定性（MI）在低泵浦功率下引发光谱展宽，并且在高泵浦功率下，MI与受激拉曼散射之间的相互作用在连续谱的增长中起着重要作用。研究了参量四波混频与光纤高阶色散特性对连续谱产生的影响。
