Journal
OPTICAL MATERIALS
Volume 32, Issue 9, Pages 868-872Publisher
ELSEVIER
DOI: 10.1016/j.optmat.2010.01.003
Keywords
Tellurite glass; Z-scan; Third-order nonlinearity
Categories
Funding
- National Natural Science Foundation of China [60978058, 60908032, 60972064]
- National Natural Science Foundation of Zhejiang Province [Y1090996]
- Scientific Research Foundation of Graduate School of Ningbo University
- K.C. Wong Magna Fund, Ningbo University
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Using femto-second Z-scan measurements, third-order nonlinearities of glasses in TeO2-Bi2O3-TiO2 ternary system were investigated at 800 nm. Their relationships between linear optics represented by linear refractive indexes n(0) and optical band gap E-opg were studied. Results show that non-linear index gamma increases with increasing n(0), the largest value of gamma is 5.108 x 10(-18) m(2)/W. Non-linear absorption which recognized as two-photon absorption was resonantly enhanced when E-opg approached 3.1 eV, namely two-photon process. (C) 2010 Elsevier B.V. All rights reserved.
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