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Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/48092
Title: Enhanced nonlinear optical properties of oxygen deficient lead-niobium-germanate film glasses
Authors: Gonzalo de los Reyes, José; Fernández Martínez, Héctor; Solís Céspedes, Javier; Muñoz-Martín, David; Fernández Navarro, José María; Afonso, Carmen N.; Fierro, Jose L. G.
Keywords: [PACS] Glasses, quartz
[PACS] Optical coatings
[PACS] Optical susceptibility, hyperpolarizability
[PACS] Beam trapping, self-focusing and defocusing; self-phase modulation
[PACS] Disordered structures
Issue Date: 19-Jun-2007
Publisher: American Institute of Physics
Citation: Applied Physics Letters, 90 (25) : 251907 (2007)
Abstract: The third order nonlinear optical properties of oxygen deficient lead-niobium-germanate film glasses with heavy metal contents beyond that of the bulk glass formation region have been investigated. Values of the nonlinear third order optical susceptibility up to /χ(³)/ ≈ 1.8×10⁻¹¹ esu have been measured by degenerate four wave mixing at 800 nm in films having large heavy metal fractions (0.93). The fast buildup and decay times ( ≈ 130 fs) of the nonlinear response confirm its nonresonant character. The partial reduction of Nb⁵+ to Nb4+ evidenced by x-ray photoelectron spectroscopy, which is associated with the oxygen deficiency, appears to be responsible for the strong enhancement of /χ(³)/.
Description: 3 pags. ; 3 figs. ; 1 tab.
Publisher version (URL): http://dx.doi.org/10.1063/1.2749837
URI: http://hdl.handle.net/10261/48092
ISSN: 0003-6951
DOI: 10.1063/1.2749837
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