کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1543514 | 1512837 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High spatial resolution imaging in a clipping Kagomé lattice photonic crystal
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: High spatial resolution imaging in a clipping Kagomé lattice photonic crystal High spatial resolution imaging in a clipping Kagomé lattice photonic crystal](/preview/png/1543514.png)
چکیده انگلیسی
In this paper, a two-dimensional Kagomé lattice photonic crystal (PC) made of GaAs (É = 12.96) dielectric rods in air is considered. This Kagomé lattice PC has an effective refractive index neff = â1 at a low normalized frequency Ï = 0.187 Ã 2Ïc/a. Imaging quality and the capability of the super-resolution of two point sources are studied for a superlens made of such PC structure. In order to achieve a high quality image and to improve the spatial super-resolution of two sources, a clipping Kagomé lattice PC is designed. Results simulated by finite-difference time-domain method show that imaging quality and super-resolution of two sources can be enhanced greatly as the perfect Kagomé lattice structure are superseded by the clipping Kagomé lattice structure. Coupled-mode theory analysis gives an explanation why the clipping structure is superior to the perfect one for both the imaging quality and the capability of the super-resolution of two sources. This clipping Kagomé lattice PC structure would be widely used in optical devices and integrated circuit.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Photonics and Nanostructures - Fundamentals and Applications - Volume 6, Issues 3â4, December 2008, Pages 219-224
Journal: Photonics and Nanostructures - Fundamentals and Applications - Volume 6, Issues 3â4, December 2008, Pages 219-224
نویسندگان
J. Sun, Y.F. Shen, L.G. Wang, L.L. Sun, J. Wang, K. Han, G. Tang, G.Z. Wang,