The chirp of an ultrashort laser pulse can be extracted with high accuracy from a modified spectrum autointerferometric correlation waveform by using a new time domain algorithm that allows signal averaging. We display results revealing high sensitivity to chirp even with signal-to-noise levels approaching unity. Correction algorithms have been developed to accommodate signal distortion arising from bandwidth limitations, interferometer misalignment, and nonquadratic detector response.
© 2006 Optical Society of America
Daniel A. Bender, Michael P. Hasselbeck, and Mansoor Sheik-Bahae, "Sensitive ultrashort pulse chirp measurement," Opt. Lett. 31, 122-124 (2006)