不同波长飞秒脉冲的相位测量

Phase measurement of femtosecond pulses at different wavelengths

飞秒脉冲技术的不断发展能够较方便地产生不同波段和结构特性的飞秒脉冲.对已有的改进型零附加相位光谱相位相干电场重构系统进行优化整合,使之胜任不同特性飞秒脉冲的测量.利用该系统测量了两台飞秒激光系统输出不同波长的脉冲及其通过厚度为80mm的BK7玻璃块而得到的啁啾脉冲.实验结果表明,该系统的适用范围较宽.

The continuous development of femtosecond technique has made it convenient to generate ultrashort pulses with variant structures in different wave ranges.In this paper we optimize the modified-zero-additional-phase spectral phase interferometry for direct electric field reconstruction system,so as to measure femtosecond pulses with different features.Pulses delivered from two femtosecond sources as well as the pulses stretched by an 80 mm-thick BK7 glass block are characterized with this system.The experimental results show sufficiently the versatility of our system.