Research Center for Advanced Photon Technology, Toyota Technological Institute, 2-12-1 Hisakata, Tempaku, Nagoya 468-8511, Japan.
Opt Lett. 2010 Jan 1;35(1):58-60. doi: 10.1364/OL.35.000058.
We report what we believe to be the first demonstration of the second and third harmonics in tellurite microstructured fibers pumped by a 1557 nm femtosecond fiber laser. The intensities of the second and third harmonics are enhanced by increasing the nonlinear coefficient of the tellurite microstructured fiber. By using tellurite microstructured fiber with a core diameter of approximately 2.7 microm, supercontinuum light expanding from 470 nm to 2400 nm could be achieved. The effects of the fiber-core diameter on the flatness of the supercontinuum light are also investigated when pumped at 1557 nm.
我们报告了在由 1557nm 飞秒光纤激光器泵浦的碲酸盐微结构光纤中，第二次和第三次谐波的首次演示。通过增加碲酸盐微结构光纤的非线性系数，可以增强第二次和第三次谐波的强度。通过使用芯径约为 2.7μm 的碲酸盐微结构光纤，可以实现从 470nm 扩展到 2400nm 的超连续谱光。当在 1557nm 处泵浦时，还研究了光纤芯径对超连续谱光平坦度的影响。
