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High-Speed “Multi-Grid” Pulse-Retrieval Algorithm for Frequency-Resolved Optical Gating

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Abstract

We improved the FROG-algorithm convergence speed for very complex pulses using a “multi-grid” technique, reducing the convergence time by a factor of ~7 for cross-correlation FROG for pulses with time-bandwidth products from 40 to 90.

© 2018 The Author(s)

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