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1 2011

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Absorption characteristics of Disperse Blue 1/dioxane solutions

Abbas B., Khalil M. A.

Optica Applicata

2011

Vol. 41, nr 1

207--216

We have studied the absorption performance of the organic dye Disperse Blue 1 (DB1) in dioxane at different concentrations. Solutions were exposed to high intensities of CW laser radiation with the following wavelengths: 632.8 nm (He-Ne laser), 488, 496, and 514 nm (argon-ion laser). DB1 solutions showed optical limiting at high intensity of 632.8 nm laser radiation, which is very close to DB1 maximum absorption. Very dilute solution of the order of ~10–4 M was enough to limit the transmitted power of the incident laser light by more than 90%. However, for other Ar-ion laser wavelengths, concentrations as high as 7.46×10–4 M were needed for the optical limiting characteristics to be observed.