کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5404205 | 1505932 | 2006 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ultrafast nonlinear optical response of silver/bismuth oxide nanocomposite films with different silver concentrations
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The ultrafast nonlinear optical properties of co-sputtered silver/bismuth oxide (Ag:Bi2O3) nanocomposite films with different Ag concentration (13.2-59.3Â at%) were investigated by femtosecond (fs) pump-probe and fs optical Kerr effect (OKE) techniques. The pump-probe measurements revealed the Ag concentration-related energy relaxation dynamics: for films with high concentration of Ag (>50%), the relaxation dynamics consist of a fast excitation power-dependent component (1-2Â ps) and a long-lived component (>100Â ps). While for films with relative low Ag concentration (<40%), the energy relaxation behaves as a single exponential process, nearly completed within 1Â ps. This Ag concentration related dynamical behavior was suggested to be originated from the differences in the structural and thermal properties of both Ag nanoparticles and Bi2O3 matrices. The result of the femtosecond OKE measurements showed that the third-order susceptibilities (Ï(3)) of Ag:Bi2O3 films have a maximum of 4.1Ã10â10Â esu at Ag concentration of 35.7%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volumes 119â120, JulyâOctober 2006, Pages 370-377
Journal: Journal of Luminescence - Volumes 119â120, JulyâOctober 2006, Pages 370-377
نویسندگان
Guanjun You, Peng Zhou, Chunfeng Zhang, Zhiwei Dong, Liangyao Chen, Shixiong Qian,