کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5376684 | 1389369 | 2006 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Third-order nonlinear optical studies of newly synthesized polyoxadiazoles containing 3,4-dialkoxythiophenes
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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 third-order nonlinear optical properties of newly synthesized soluble polyoxadiazoles containing 3,4-dialkoxythiophenes were investigated by using Z-scan and degenerate four-wave mixing (DFWM) techniques. The measurements were performed at 532Â nm with 7Â ns pulses from a Nd:YAG laser. We found a good agreement between the values of Ï(3) determined from both the experiments. Z-scan results indicate a negative nonlinear refractive index, n2, whose magnitude is of the order of 10â10Â esu for all the copolymers. The variation of nonlinear response among the copolymers clearly indicates the dependence of Ï(3) on donor and acceptor type of units present in these copolymers. The copolymers exhibit strong reverse saturable absorption and good optical limiting properties at 532Â nm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics - Volume 331, Issue 1, 11 December 2006, Pages 125-130
Journal: Chemical Physics - Volume 331, Issue 1, 11 December 2006, Pages 125-130
نویسندگان
D. Udayakumar, A. John Kiran, A. Vasudeva Adhikari, K. Chandrasekharan, G. Umesh, H.D. Shashikala,