Phase measurement of femtosecond pulses at different wavelengths

Abstract

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.