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Sensitive ultrashort pulse chirp measurement

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Abstract

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

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