Ultrafast nonlinearity of antimony polyphosphate glasses

Falcão Filho, F. L.; Bosco, C. A. C.; Maciel, G. S.; de Araüjo, Cid B.; Acioli, L. H.; Nalin, M.; Messaddeq, Y.
August 2003
Applied Physics Letters;8/18/2003, Vol. 83 Issue 7, p1292
Academic Journal
We report on the ultrafast nonlinearity of antimony polyphosphate glasses measured using the Kerr shutter technique. The nonlinear refractive index, n[sub 2], was (1.1±0.2)×10[sup -14] cm[sup 2]/W at 800 nm, and enhancement of n[sub 2] by ≈80% was observed by adding 10% of lead oxide in the glass composition. The full width at half-maximum of the third-order correlation signal was 150 fs, which implies a fast response of the samples (<=100 fs). Nonlinear absorption was negligible in the range of intensities used. © 2003 American Institute of Physics.


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