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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 28 — Dec. 31, 2012
  • pp: 29319–29328

Free space diffraction on active gratings with balanced phase and gain/loss modulations

Mykola Kulishov and Bernard Kress  »View Author Affiliations

Optics Express, Vol. 20, Issue 28, pp. 29319-29328 (2012)

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A theoretical analysis of asymmetrical diffraction in Raman-Nath, intermediate and Bragg diffraction regimes is presented. The asymmetry is achieved by combining matched periodic modulations of the phase and of the loss/gain of the material, which enables the breakdown of optical symmetry and redirects all resulting optical energy in only positive or only negative diffraction orders, depending on the quarter period shift directions between the phase and the loss/gain modulations. Analytic expressions for the amplitudes of the diffraction orders are derived based on rigorous multimode coupled mode equations in slowly varying amplitude approximation.

© 2012 OSA

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.1960) Diffraction and gratings : Diffraction theory
(090.0090) Holography : Holography
(090.1970) Holography : Diffractive optics
(090.2890) Holography : Holographic optical elements
(140.4480) Lasers and laser optics : Optical amplifiers
(230.1950) Optical devices : Diffraction gratings

ToC Category:
Diffraction and Gratings

Original Manuscript: November 8, 2012
Revised Manuscript: December 12, 2012
Manuscript Accepted: December 12, 2012
Published: December 18, 2012

Mykola Kulishov and Bernard Kress, "Free space diffraction on active gratings with balanced phase and gain/loss modulations," Opt. Express 20, 29319-29328 (2012)

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