【摘要】 介绍了用SPIDER测量光谱相位的实验装置和模拟计算飞秒激光特性参数的原理 ;提出了Ω和τ等重要参数的确定方法 .实验上用自建的SPIDER进行了掺钛蓝宝石飞秒振荡器输出脉冲的相位测量 ,并以此为基础还原出了原输入脉冲的时域形式 ,模合计算所得的脉宽为 1 0 7fs,与利用二次相关法直接测量的结果十分一致更多还原

【Abstract】 We present an experimental set up and the calculation approach for the measurement of the spectral phase of femtosecond laser pulse by using a spectral phase interferometry for direct electric reconstruction (SPIDER) technique in this paper, the method for determining crucial parameters as Ω and τ was given. With the femtosecond laser pulse from the Ti:sapphire laser, we obtained the phase of the laser spectrum by using the SPIDER, the temporal profile of the original laser pulse was deduced based on the result. It reveals the FWHM width is 107fs, which is in good agreement with the result measured directly by using an autocorrelator.更多还原