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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 37, Iss. 14 — Jul. 15, 2012
  • pp: 2853–2855

Manipulating stored images with phase imprinting at low light levels

L. Zhao, Guojian Yang, and Wenhui Duan  »View Author Affiliations


Optics Letters, Vol. 37, Issue 14, pp. 2853-2855 (2012)
http://dx.doi.org/10.1364/OL.37.002853


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Abstract

Coherent manipulation of stored images is performed at low light levels based on enhanced cross-Kerr nonlinearity in a four-level N-type electromagnetically induced transparency (EIT) system. Using intensity masks in the signal pulse, quadratic phase shifts with low nonlinear absorption can be efficiently imprinted on the Fraunhofer diffraction patterns already stored in the EIT system. Fast-Fourier-transform-based numerical simulations clearly demonstrate that the far-field images of the retrieved probe light can be flexibly modulated by applying different signal fields. Our studies could help advance the goals of nonlinear all-optical processing for spatial information coherently stored in EIT systems.

© 2012 Optical Society of America

OCIS Codes
(070.4340) Fourier optics and signal processing : Nonlinear optical signal processing
(190.3270) Nonlinear optics : Kerr effect
(230.1150) Optical devices : All-optical devices
(270.1670) Quantum optics : Coherent optical effects

ToC Category:
Optical Devices

History
Original Manuscript: April 10, 2012
Revised Manuscript: May 31, 2012
Manuscript Accepted: June 1, 2012
Published: July 10, 2012

Citation
L. Zhao, Guojian Yang, and Wenhui Duan, "Manipulating stored images with phase imprinting at low light levels," Opt. Lett. 37, 2853-2855 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-14-2853


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