Amplitude and phase characterization of weak blue ultrashort pulses by downconversion
- 15 April 1999
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 24 (8) , 569-571
- https://doi.org/10.1364/ol.24.000569
Abstract
We present difference-frequency generation cross-correlation frequency-resolved optical gating, a new method of characterizing the amplitude and phase of weak ultrashort pulses in the blue spectral region. The method uses the spectrally resolved downconversion signal of the blue pulse and a fully characterized reference pulse with a lower center frequency. The amplitude and phase of the blue test pulse are retrieved from the corresponding spectrogram and electric field of the reference pulse with an interactive Fourier-transform algorithm.Keywords
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