Please use this identifier to cite or link to this item: https://doi.org/10.1364/AO.47.001187
Title: Analytical expression for femtosecond-pulsed z scans on instantaneous nonlinearity
Authors: Gu, B.
Ji, W. 
Huang, X.-Q.
Issue Date: 20-Mar-2008
Source: 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
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