摘要
本文对非线性介质中的群速色散效应进行了详细分析，指出群速弥散现象是影响超短激光脉冲其脉宽压缩的重要因素之一．另外计算还表明：腔镜的二、三阶色散在中心频率附近较小、两端较大，并且，其色散量的大小与高低镀膜层折射率之比以及镀膜层数等有关。
AbstractThis article analyzes the group velocity dispersion (GVD)in nonlinear media and concludes that GVD phenomenon is one of the most important factors in affecting the width compression of ultrashort laser pulse.The calculations also shows that second and third order dispersion on foring carity mirror are smaller near centre frequency than on two sides and that the volume of dispersion is connected with the rate of refracting power between high and low plating film layer and with the numbers of plating film layers.The paper is ended with some valid ways of compensating the dispersion.
基金
陕西省自然科学基金
陕西省教委专项科研基金
