دوره 13، شماره 1 - ( 10-1397 )                   جلد 13 شماره 1 صفحات 13-22 | برگشت به فهرست نسخه ها


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Asgari Sabet R, Khoshsima H. Considerably Enhanced Second-Harmonic Generation in Resonant U-Shaped Nano-Structures. IJOP. 2019; 13 (1) :13-22
URL: http://ijop.ir/article-1-321-fa.html
Considerably Enhanced Second-Harmonic Generation in Resonant U-Shaped Nano-Structures. . 1397; 13 (1) :13-22

URL: http://ijop.ir/article-1-321-fa.html


چکیده:   (2331 مشاهده)
In this paper, we perform a detailed study of the spectral response of the gold U-shaped nano-structures for different geometrical parameters and polarizations in order to obtain significant localization factor in the wavelength 1.55 μm. The obtained near-field distribution of electric fields reveals that resonances in these nano-structures correspond to the even and odd plasmonic modes depending on the geometrical parameters and polarization directions. Considerably large localization factor is obtained for the first odd mode in specific geometrical parameters. Then, this structure is considered to be surrounded by a typical second-order nonlinear dielectric. The effective susceptibility is calculated for the considered structure, using the nonlinear retrieval method, to demonstrate the enhanced second-harmonic generation quantitatively.   In order to represent the applicability of the investigated structure in nano-scale light sources and frequency doublers, its second harmonic generation efficiency is compared with the efficiency of the nonlinear dielectric alone with the same dimensions.
     
نوع مطالعه: پژوهشي | موضوع مقاله: عمومى
دریافت: 1396/6/26 | ویرایش نهایی: 1396/9/3 | پذیرش: 1396/10/2 | انتشار: 1398/8/5

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