%0 Journal Article
%T Subwavelength Imaging in a One-Dimensional Metal-Dielectric Structure
%A LI Ming-Yu
%A GU Pei-Fu
%A ZHANG Jin-Long
%A LI Yi-Yu
%A LIU Xu
%A <br>李明宇
%A 顾培夫
%A 张锦龙
%A 厉以宇
%A 刘旭
%J 中国物理快报
%D 2007
%I 
%X We analyse the dispersion relation of a one-dimensional （1D） metal-dielectric （MD） structure for H-polarized light （i.e. the magnetic field is parallel to the interfaces of the layers） and use the transfer matrix method to simulate the subwavelength image effect through the 1D-MD structure. The structure operates in the self-collimation regime, and does not involve negative refraction or amplification of evanescent waves. The Fabry-Perot resonance effect is studied in order to obtain optimum parameters for maximum transmission. A resolution of ）λ/10 for a single point source is achieved when the thickness of the 1D-MD is about 300 nm. Taking into account the actual values of the dielectric constants of the metal （silver） and the dielectric （HfO2） layers, we find that a silver/HfO2 stack, with suitable parameters, has a resolution of λ/5 at visible wavelengths.
%K 78
%K 20
%K -e
%K 42
%K 70
%K Qs<br>子波长
%K 成像
%K 金属
%K 电介质
%K 结构
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=788D7D6770ADAAC394E95906C33C2142&yid=A732AF04DDA03BB3&vid=B91E8C6D6FE990DB&iid=59906B3B2830C2C5&sid=C5DD99021E8FE175&eid=BC313C827ECD4E48&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=18