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Motiei H, Jafari Dolama A, Naderali R. Nonlinear optical properties of carboxymethyl cellulose nanocomposite. ICOP & ICPET _ INPC _ ICOFS 2016; 22 :838-841
URL: http://opsi.ir/article-1-904-en.html
URL: http://opsi.ir/article-1-904-en.html
Abstract: (3256 Views)
In this paper, we present the third-order nonlinear optical (NLO) properties of modified nanocomposite carboxymethyl cellulose (CeCOOH). The nanocomposite of CeCOOH has been synthesized by a chemical technique. Linear optical response of this sample was studied by using ultraviolet-visible (UV-vis) spectroscopy. Nonlinear refraction and absorption coefficients of the nanocomposite were measured in solvent N-Methylpyrrolidone (NMP), by Z-scan method using second harmonics line of Nd-YAG laser in two different input laser intensities, in order to compare the results. The measured values of nonlinear refraction in NMP solution was from the order of 10-9m2/w. By studying the intesity-dependant refraction and absorption coefficients of the nanocomposite it was observed that increasing the intensity leads to increase peak-valley transmittance difference.
Keywords: Nonlinear optics, nonlinear refraction coefficient, nonlinear absorption coefficient, Z-scan technique, Nanocomposite.
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