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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campilo
  • Vol. 32, Iss. 17 — Sep. 1, 2007
  • pp: 2587–2589

Nonlinear optical waveguides generated in lithium niobate by swift-ion irradiation at ultralow fluences

J. Olivares, A. García-Navarro, G. García, A. Méndez, F. Agulló-López, A. García-Cabañes, M. Carrascosa, and O. Caballero  »View Author Affiliations


Optics Letters, Vol. 32, Issue 17, pp. 2587-2589 (2007)
http://dx.doi.org/10.1364/OL.32.002587


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Abstract

A novel method to produce optical waveguides is demonstrated for lithium niobate ( Li Nb O 3 ) . It is based on electronic excitation damage by swift ions, i.e., with energies at approximately 1 MeV amu or above. The new technique uses high-energy medium-mass ions, such as Cl, with electronic stopping powers above the threshold value for amorphization ( 5 6 keV nm ) , reaching the maximum value a few micrometers inside the crystal. At the ultralow fluence regime ( 10 12 10 13 cm 2 ) an effective nanostructured medium is obtained that behaves as an optical waveguide where light propagates transversally to the amorphous nanotracks created by every single impact. The method implies a reduction of 4 orders of magnitude with respect to He implantation. The optical waveguides present reasonable losses ( 10 dB cm ) and significant second-harmonic generation (SHG) and electro-optic (EO) responses ( > 50 % bulk) for the lowest fluences.

© 2007 Optical Society of America

OCIS Codes
(130.3730) Integrated optics : Lithium niobate
(130.4310) Integrated optics : Nonlinear
(160.3730) Materials : Lithium niobate
(190.4390) Nonlinear optics : Nonlinear optics, integrated optics

ToC Category:
Integrated Optics

History
Original Manuscript: May 4, 2007
Revised Manuscript: July 17, 2007
Manuscript Accepted: July 28, 2007
Published: August 23, 2007

Citation
J. Olivares, A. García-Navarro, G. García, A. Méndez, F. Agulló-López, A. García-Cabañes, M. Carrascosa, and O. Caballero, "Nonlinear optical waveguides generated in lithium niobate by swift-ion irradiation at ultralow fluences," Opt. Lett. 32, 2587-2589 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-17-2587

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