کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7130038 1461616 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigations of intensity dependant nonlinear optical properties of betanin/ZnO composites embedded in PVA
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
Investigations of intensity dependant nonlinear optical properties of betanin/ZnO composites embedded in PVA
چکیده انگلیسی
In this report, we report the intensity dependant nonlinear absorption properties of bio-inspired hybrid materials (betanin-ZnO) embedded in polymeric matrices through the Z-scan technique using an Nd: YAG laser (532 nm, 7 ns, 10 Hz). We observed a change over in the sign of nonlinearity due to the interplay of exciton bleaching and optical limiting mechanisms. Light confinement effect and ship-in-a bottle effect play crucial roles. Theoretical analysis has been performed using a model based on nonlinear absorption coefficient and saturation intensity. The result of present study gives an additional mechanism for the gain enhancement in dye doped ZnO matrix.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics & Laser Technology - Volume 83, September 2016, Pages 28-34
نویسندگان
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