【摘要】 利用1.06μm声光调Q激光器作泵浦源,从多模光纤获得了光谱范围从1.1～1.9μm 的宽带非线性散射谱。散射谱在光纤零色散波长附近有较平坦的宽带准连续谱。我们认为此光连续谱是由受激喇曼散射与四光子混频过程的组合作用产生的。更多还原

【Abstract】 A wideband nonlinear scattering spectrum (1.1—1.9 um) is obtained in a multimodeoptical fiber pumped with an A-O Q-switched Nd:YAG laser at 1.06 um.The spectrum forms a goodquasicontinuum at the zero-material-dispersion range of the fiber.Discussion about the generationmechanism of the continuum is given.It shows that the continuum is generated by combined interac-tion of stimulated Raman scattering and four-photon mixing.更多还原