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Title

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

AuthorsOlivares Pascual, José; García Navarro, A.; García, Gustavo ; Méndez, A.; Agulló-López, F.; García Cabañes, A.; Carrascosa Rico, Mercedes; Caballero, O.
Issue Date2007
PublisherOptical Society of America
CitationOptics Letters 32(17): 2587-2589 (2007)
AbstractA novel method to produce optical waveguides is demonstrated for lithium niobate (LiNbO3). 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 (1012-1013 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.
URIhttp://hdl.handle.net/10261/53453
DOI10.1364/OL.32.002587
Identifiersdoi: 10.1364/OL.32.002587
issn: 0146-9592
e-issn: 1539-4794
Appears in Collections:(CFMAC-IO) Artículos
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