Low loss optical waveguides fabricated in LiTaO3 by swift heavy ion irradiation
EntityUAM. Departamento de Física de Materiales
PublisherOptical Society of America
10.1364/OE.27.008696Optics Express 27.6 (2019): 8696-8708
Funded byV. Tormo-Márquez thanks the CMAM-UAM for their financial support. We thank the Technical staff of the CMAM-UAM center for support with the ion irradiations
SubjectsLithium compounds; Heavy ions; Ion bombardment; Niobium compounds; Silicon; Waveguides; Tantalum compounds; Materiales / Ciencia de los Materiales; Óptica
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Optical waveguides are fabricated by irradiation of LiTaO 3 with a variety of swift heavy ions that provide increasing levels of both nuclear and electronic damage rates, including C, F and Si ions, in the energy range of 15-40 MeV. A systematic study of the role of the ion fluence has been carried out in the broad range of 1e13-2e15 at/cm 2 . The kinetics of damage is initially of nuclear origin for the lowest fluences and stopping powers and, then, is enhanced by the electronic excitation (for F and Si ions) in synergy with the nuclear damage. Applying suitable annealing treatments, optical propagation losses values as low as 0.1 dB have been achieved. The damage rates found in LiTaO 3 have been compared with those known for the reference LiNbO 3 and discussed in the context of the thermal spike model
Google Scholar:Tormo-Marquez, V. - Díaz-Hijar, M. - Carrascosa Rico, Mercedes - Shur, V. Y.A. - Olivares, J.
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