%0 Journal Article
%T Low-Power Super-resolution Readout with Antimony Bismuth Alloy Film as Mask layer<br>
%A JIANG Lai-Xin
%A WU Yi-Qun
%A WANG Yang
%A WEI Jing-Song
%A GAN Fu-Xi
%A <br>
%J 中国物理快报
%D 2009
%I 
%X Sb-Bi alloy films are proposed as a new kind of super-resolution mask layer with low readout threshold power. Using the Sb-Bi alloy film as a mask layer and SiN as a protective layer in a read-only memory disc, the super-resolution pits with diameters of 380nm are read out by a dynamic setup, the laser wavelength is 780nm and the numerical aperture of pickup lens is 0.45. The effects of the Sb-Bi thin film thickness, laser readout power and disc rotating velocity on the readout signal are investigated. The results show that the threshold laser power of super-resolution readout of the Sb-Bi mask layer is about 0.5mW, and the corresponding carrier-to-noise ratio is about 20dB at the film thickness of 50nm. The super-resolution mechanism of the Sb-Bi alloy mask layer is discussed based on its temperature dependence of reflection.
%K 42
%K 70
%K Ln
%K 42
%K 40
%K Ht
%K 42
%K 79
%K Vb<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=ED4B1BDECDDDA46C06708F1F53D510B3&yid=DE12191FBD62783C&vid=96C778EE049EE47D&iid=0B39A22176CE99FB&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0