【摘要】 采用波长可调光参量放大器作为泵浦源 ,对保偏光子晶体光纤的超连续谱的产生和非线性特性进行了实验研究 将光参量放大器产生的中心波长为 1.2 7μm ,脉宽约为 2 5 0fs ,重复频率为2 5 0kHz和单脉冲能量只有 92nJ的光脉冲耦合进 0 .2m长的保偏光子晶体光纤 ,实验中观察到了光谱展宽和非线性效应 ,在 1.3μm波长区域获得了谱宽为 83nm (1.2 4 86～ 1.3318μm)的超连续谱更多还原

【Abstract】 The nonlinearity and the supercontinuum of 83 nm (1.2486～1.3318 μm) in the 1.3 μm region were generated by the propagation of femtosecond pulses produced by an Optical Parametric Amplifier through a 0.2 m-long, polarization-maintaining photonic crystal fiber.Spectral broadening was observed in a photonic crystal fiberwithanaveragecoreradiusof1.8μm, pumpedbyopticalpulseswithadurationof250fs,arepetitionrateof250kHz and an energy of 92 nJ .更多还原