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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 13 — Jul. 1, 2013
  • pp: 2298–2300

Spatial modulation of second-harmonic generation via nonlinear Raman–Nath diffraction in an aperiodically poled lithium tantalite

Yuping Chen, Weirui Dang, Yuanlin Zheng, Xianfeng Chen, and Xuewei Deng  »View Author Affiliations


Optics Letters, Vol. 38, Issue 13, pp. 2298-2300 (2013)
http://dx.doi.org/10.1364/OL.38.002298


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Abstract

We propose and experimentally demonstrate a colorful nonlinear Raman–Nath second-harmonic generation by engineering the quadratic nonlinearity χ(2) in an aperiodically poled lithium tantalite. The engineered nonlinear structure allows multicolored Raman–Nath second-harmonic signal outputs along a uniform direction, which cannot be achieved in a uniform nonlinear grating. The diffraction angles are independent of the beam waist and the position of incidence. This verifies that nonlinear Raman–Nath diffraction does not depend on the local superlattice structure where the fundamental frequency beam locates, but on the whole nonlinear χ(2) crystal.

© 2013 Optical Society of America

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4420) Nonlinear optics : Nonlinear optics, transverse effects in

ToC Category:
Nonlinear Optics

History
Original Manuscript: April 3, 2013
Revised Manuscript: May 22, 2013
Manuscript Accepted: May 22, 2013
Published: June 26, 2013

Citation
Yuping Chen, Weirui Dang, Yuanlin Zheng, Xianfeng Chen, and Xuewei Deng, "Spatial modulation of second-harmonic generation via nonlinear Raman–Nath diffraction in an aperiodically poled lithium tantalite," Opt. Lett. 38, 2298-2300 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-13-2298

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