Near-infrared nonlinearity of a multicomponent tellurium oxide glass at 800 and 1,064 nm
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2014-07-01
Autores
Oliveira, Tamara A.
Manzani, Danilo [UNESP]
Falcao-Filho, Edilson L.
Messaddeq, Younes [UNESP]
Boudebs, Georges
Fedus, Kamil
Araujo, Cid B. de
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Springer
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We report on the nonlinear (NL) optical properties of glassy TeO2-GeO2-K2O-Bi2O3 at lambda = 800 nm and lambda = 1,064 nm. Using the Kerr gate technique with a laser delivering 150 fs pulses at 800 nm, we demonstrated the fast NL response of the samples. The modulus of the NL refractive index, n (2), at 800 nm was similar to 10(-15) cm(2)/W. The Z-scan technique was used to determine n (2) a parts per thousand +10(-15) cm(2)/W, at 1,064 nm with pulses of 17 ps. The two-photon absorption coefficient, alpha (2), was smaller than the minimum that we can measure (< 0.003 cm/GW). The figure of merit n (2)/alpha (2) lambda was calculated and indicates that this glass composition has large potential to be used for all-optical switching.
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Applied Physics B-lasers And Optics. New York: Springer, v. 116, n. 1, p. 1-5, 2014.