%0 Journal Article
%T Analysis of Diffraction Efficiency of the Holographic Optical Elements in VCD and DVD<br>VCD和DVD用全息光栅衍射效率的分析
%A 梁万国
%A 郑婉华
%A 谢敬辉
%A 梁恩主
%A 陈良惠
%A 李卉
%A 刘浩
%J 半导体学报
%D 2001
%I 
%X In VCD and DVD pick-up head systems,the number of the optical elements in a holographic optical pick-up head is less than that used in the conventional one due to the application of holographic optical elements.The principles of the signals detecting,focusing and tracking of the optical disk are analyzed.The general fomulas of the diffraction efficiency for gra- tings are deduced,especially for the gratings with rectangular relief profile.The useful depths between land and groove of the gratings used in VCD and DVD are also given.
%K holographic optical element
%K optical pick-up head
%K diffraction efficiency<br>全息光学元件
%K 光学读出头
%K 衍射效率
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=025C8057C4D37C4BA0041DC7DE7C758F&aid=98C35824BF58F12C&yid=14E7EF987E4155E6&vid=BC12EA701C895178&iid=B31275AF3241DB2D&sid=141C24EC1980F602&eid=872F6C582A30BA57&journal_id=1674-4926&journal_name=半导体学报&referenced_num=2&reference_num=0