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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 17, Iss. 10 — Oct. 1, 2000
  • pp: 1759–1773

Femtosecond-rate space-to-time conversion

Dan Marom, Dmitriy Panasenko, Pang-Chen Sun, and Yeshaiahu Fainman  »View Author Affiliations


JOSA B, Vol. 17, Issue 10, pp. 1759-1773 (2000)
http://dx.doi.org/10.1364/JOSAB.17.001759


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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.

© 2000 Optical Society of America

OCIS Codes
(070.1170) Fourier optics and signal processing : Analog optical signal processing
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(320.5540) Ultrafast optics : Pulse shaping

Citation
Dan Marom, Dmitriy Panasenko, Pang-Chen Sun, and Yeshaiahu Fainman, "Femtosecond-rate space-to-time conversion," J. Opt. Soc. Am. B 17, 1759-1773 (2000)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-17-10-1759

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