Chinese Optics Letters, 2014, 12 (1): 012401, Published Online: Jan. 10, 2014  

Tuning the focusing spot of plasmonic nanolens by aspect ratio under linear polarization Download: 537次

Author Affiliations
Abstract
A new plasmonic nanolens that can be tuned by varying the circular structure into an elliptical annulus and the aspect ratio from 1 to 0.1 and 1 to 2, respectively, is proposed. Using the rigorous finite-difference and time-domain algorithm, we find that when the aspect ratio ranges from 1 to 0.1, a good linear relationship exists between the aspect ratio and focusing spot size at the full-width at half-maximum in the x- and y-directions, respectively. The corresponding calculated FWHM ranges from 96 × 126 (nm) to 15 \times 52 (nm) (Full Width at Half Maximum).

Shuiyan Cao, Weixing Yu, Cheng Wang, Yongqi Fu. Tuning the focusing spot of plasmonic nanolens by aspect ratio under linear polarization[J]. Chinese Optics Letters, 2014, 12(1): 012401.

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!