%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
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
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