Non-linear and photorefractive characterisation of highly confined LiNbO3 waveguides prepared by high-energy, low-fluence ion irradiation

by O. Caballero, A. García-Cabañes, J. Carnicero, M. Carrascosa, F. Agulló-López, J. Olivares, A. García-Navarro and G. García

Abstract:

A preliminary characterisation is presented on the non-linear and photorefractive behavior of LiNbO3 optical waveguides produced with a novel irradiation procedure. As described elsewhere, the method involves irradiation of the substrate with medium mass high-energy ions (F4+ at 20-22 MeV), whose electronic stopping power reaches a maximum value inside the crystal and not at the surface. Because a very low fluence is sufficient, the fabrication time is reduced about three orders of magnitude in comparison with similar guides prepared by conventional implantation. Thus, lowfluence irradiated guides seem serious candidate for massive cheap production in device applications. The guides show step-like, high-jump index profiles and support highly confined propagation modes. The fabrication process and the obtained index profiles have been described, and the second order nonlinear response and the recording and erasing of photorefractive gratings have been investigated in the paper. Results on the effect of the fluence (1014 at/cm2) and annealing treatments (300°C, 1 h) on the non-linear optical waveguide behavior are also presented.

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Reference:

O. Caballero, A. García-Cabañes, J. Carnicero, M. Carrascosa, F. Agulló-López, J. Olivares, A. García-Navarro and G. García, “Non-linear and photorefractive characterisation of highly confined LiNbO3 waveguides prepared by high-energy, low-fluence ion irradiation”, In Photorefractive Effects, Materials, and Devices (2005), paper 179, Optical Society of America, pp. 179.

Bibtex Entry:

@inproceedings{caballero_non-linear_2005,
	title = {Non-linear and photorefractive characterisation of highly confined {LiNbO3} waveguides prepared by high-energy, low-fluence ion irradiation},
	copyright = {© 2005 Optical Society of America},
	url = {https://www.osapublishing.org/abstract.cfm?uri=PEMD-2005-179},
	abstract = {A preliminary characterisation is presented on the non-linear and photorefractive behavior of LiNbO3 optical waveguides produced with a novel irradiation procedure. As described elsewhere, the method involves irradiation of the substrate with medium mass high-energy ions (F4+ at 20-22 MeV), whose electronic stopping power reaches a maximum value inside the crystal and not at the surface. Because a very low fluence is sufficient, the fabrication time is reduced about three orders of magnitude in comparison with similar guides prepared by conventional implantation. Thus, lowfluence irradiated guides seem serious candidate for massive cheap production in device applications. The guides show step-like, high-jump index profiles and support highly confined propagation modes. The fabrication process and the obtained index profiles have been described, and the second order nonlinear response and the recording and erasing of photorefractive gratings have been investigated in the paper. Results on the effect of the fluence (1014 at/cm2) and annealing treatments (300°C, 1 h) on the non-linear optical waveguide behavior are also presented.},
	language = {EN},
	urldate = {2017-10-06},
	booktitle = {Photorefractive {Effects}, {Materials}, and {Devices} (2005), paper 179},
	publisher = {Optical Society of America},
	author = {Caballero, O. and García-Cabañes, A. and Carnicero, J. and Carrascosa, M. and Agulló-López, F. and Olivares, J. and García-Navarro, A. and García, G.},
	month = jul,
	year = {2005},
	keywords = {Lithium niobate, Waveguides, Nonlinear optics, materials, Photorefractive optics, planar},
	pages = {179},
	file = {Snapshot:E:\cmam_papers\files\1043\abstract.html:text/html;Snapshot:E:\Usuarios\Administrator\Zotero\storage\BP9QMY99\abstract.html:text/html},
}