Femtosecond-rate space-to-time conversion

Dan Marom*, Dmitriy Panasenko, Pang Chen Sun, Yeshaiahu Fainman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

A real-time spatial-temporal processor based on cascaded nonlinearities converts space-domain images to time-domain waveforms by the interaction of spectrally decomposed ultrashort pulses and spatially Fourier-transformed images carried by quasi-monochromatic light waves. We use four-wave mixing, achieved by cascaded second-order nonlinearities with type II noncollinear phase matching, for femtosecond-rate processing. We present a detailed analysis of the nonlinear mixing process with waves containing wide temporal and angular bandwidths. The wide bandwidths give rise to phase-mismatch terms in each process of the cascade. We define a complex spatial-temporal filter to characterize the effects of the phase-mismatch terms, modeling the deviations from the ideal system response. New experimental results that support our findings are presented.

Original languageAmerican English
Pages (from-to)1759-1773
Number of pages15
JournalJournal of the Optical Society of America B: Optical Physics
Volume17
Issue number10
DOIs
StatePublished - Oct 2000
Externally publishedYes

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