Large second order optical nonlinearity in thermally poled amorphous niobium borophosphate films
- Institut de Chimie de la Matiere Condensee de Bordeaux, UPR 9048 CNRS, Chateau Brivazac, Avenue du Dr. Schweitzer, 33608 Pessac Cedex (France)
Thin films of sodium niobium borophosphate glass were deposited on silicon wafer and borosilicate glass substrates by radio frequency sputtering. Thermal poling of the films was performed under various voltage conditions. The chemical composition of the films after poling was controlled by x-ray energy dispersive spectroscopy and compared to the initial composition. The second harmonic signals generated by thermal poling were analyzed in reflection mode. The recorded complex Maker fringes pattern signals were simulated and fitted using a multilayer model for the estimation of the second harmonic generation nonlinear coefficients {chi}{sup (2)}. The results are compared to previously published {chi}{sup (2)} coefficients obtained for bulk oxide glasses ({approx}3 pm/V, approximately fourfold as strong as the highest value reported in thermally poled fused silica). Resulting from this study thermally poled niobium sodium borophosphate thin films are revealed of real interest as potential electro-optic devices.
- OSTI ID:
- 20879948
- Journal Information:
- Journal of Applied Physics, Vol. 100, Issue 1; Other Information: DOI: 10.1063/1.2210572; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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