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|Title:||Analytical expression for femtosecond-pulsed z scans on instantaneous nonlinearity||Authors:||Gu, B.
|Issue Date:||20-Mar-2008||Citation:||Gu, B., Ji, W., Huang, X.-Q. (2008-03-20). Analytical expression for femtosecond-pulsed z scans on instantaneous nonlinearity. Applied Optics 47 (9) : 1187-1192. ScholarBank@NUS Repository. https://doi.org/10.1364/AO.47.001187||Abstract:||By employing the Gaussian decomposition method, the analytical formulas of the Gaussian-beam Z-scan traces have been derived for an optically thin material exhibiting both refractive and absorptive parts of third-order nonlinearity, with Gaussian or hyperbolic secant squared laser pulses of femtosecond duration. The formulas have been verified experimentally with femtosecond-pulsed Z scans on a carbon disulfide and acetone solution of a chalcone derivative (0.95C 18H17ClO4 ·0.05C17H 14Cl2O3). An efficient yet accurate analytical technique has been demonstrated for extracting both the nonlinear refraction coefficient and the nonlinear absorption coefficient from a single closed-aperture Z-scan trace. © 2008 Optical Society of America.||Source Title:||Applied Optics||URI:||http://scholarbank.nus.edu.sg/handle/10635/95782||ISSN:||1559128X||DOI:||10.1364/AO.47.001187|
|Appears in Collections:||Staff Publications|
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