We report what we believe to be the first demonstration of the second and third harmonics in tellurite microstructured fibers pumped by a 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 , supercontinuum light expanding from could be achieved. The effects of the fiber-core diameter on the flatness of the supercontinuum light are also investigated when pumped at .
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