by José Olivares, Miguel L. Crespillo, Olga Caballero-Calero, María D. Ynsa, Angel García-Cabañes, Marcel Toulemonde, Christina Trautmann and Fernando Agulló-López
Abstract:
Heavy mass ions, Kr and Xe, having energies in the textasciitilde10 MeV/amu range have been used to produce thick planar optical waveguides at the surface of lithium niobate (LiNbO3). The waveguides have a thickness of 40-50 micrometers, depending on ion energy and fluence, smooth profiles and refractive index jumps up to 0.04 (λ = 633 nm). They propagate ordinary and extraordinary modes with low losses keeping a high nonlinear optical response (SHG) that makes them useful for many applications. Complementary RBS/C data provide consistent values for the partial amorphization and refractive index change at the surface. The proposed method is based on ion-induced damage caused by electronic excitation and essentially differs from the usual implantation technique using light ions (H and He) of MeV energies. It implies the generation of a buried low-index layer (acting as optical barrier), made up of amorphous nanotracks embedded into the crystalline lithium niobate crystal. An effective dielectric medium approach is developed to describe the index profiles of the waveguides. This first test demonstration could be extended to other crystalline materials and could be of great usefulness for mid-infrared applications.
Reference:
José Olivares, Miguel L. Crespillo, Olga Caballero-Calero, María D. Ynsa, Angel García-Cabañes, Marcel Toulemonde, Christina Trautmann and Fernando Agulló-López, “Thick optical waveguides in lithium niobate induced by swift heavy ions (textasciitilde10 MeV/amu) at ultralow fluences”, Optics Express, vol. 17, no. 26, pp. 24175–24182.
Bibtex Entry:
@article{olivares_thick_2009,
title = {Thick optical waveguides in lithium niobate induced by swift heavy ions ({textasciitilde}10 {MeV}/amu) at ultralow fluences},
volume = {17},
copyright = {© 2009 Optical Society of America},
issn = {1094-4087},
url = {https://www.osapublishing.org/abstract.cfm?uri=oe-17-26-24175},
doi = {10.1364/OE.17.024175},
abstract = {Heavy mass ions, Kr and Xe, having energies in the {textasciitilde}10 MeV/amu range have been used to produce thick planar optical waveguides at the surface of lithium niobate (LiNbO3). The waveguides have a thickness of 40-50 micrometers, depending on ion energy and fluence, smooth profiles and refractive index jumps up to 0.04 (λ = 633 nm). They propagate ordinary and extraordinary modes with low losses keeping a high nonlinear optical response (SHG) that makes them useful for many applications. Complementary RBS/C data provide consistent values for the partial amorphization and refractive index change at the surface. The proposed method is based on ion-induced damage caused by electronic excitation and essentially differs from the usual implantation technique using light ions (H and He) of MeV energies. It implies the generation of a buried low-index layer (acting as optical barrier), made up of amorphous nanotracks embedded into the crystalline lithium niobate crystal. An effective dielectric medium approach is developed to describe the index profiles of the waveguides. This first test demonstration could be extended to other crystalline materials and could be of great usefulness for mid-infrared applications.},
language = {EN},
number = {26},
urldate = {2017-10-06},
journal = {Optics Express},
author = {Olivares, José and Crespillo, Miguel L. and Caballero-Calero, Olga and Ynsa, María D. and García-Cabañes, Angel and Toulemonde, Marcel and Trautmann, Christina and Agulló-López, Fernando},
month = dec,
year = {2009},
keywords = {Lithium niobate, Guided waves, Integrated optics devices},
pages = {24175--24182},
file = {Full Text PDF:E:\cmam_papers\files\1011\Olivares et al. - 2009 - Thick optical waveguides in lithium niobate induce.pdf:application/pdf;Full Text PDF:E:\Usuarios\Administrator\Zotero\storage\F3732V5J\Olivares et al. - 2009 - Thick optical waveguides in lithium niobate induce.pdf:application/pdf;Snapshot:E:\cmam_papers\files\1015\abstract.html:text/html;Snapshot:E:\Usuarios\Administrator\Zotero\storage\8AFKB78H\abstract.html:text/html},
}