%0 Journal Article
%T Study on Dark Enhancement in Holographic Photopolymer<br>全息存储用光致聚合物材料的暗增长现象研究
%A ZHANG Tao
%A TAO Shi-quan
%A ZHAI Qian-li
%A WAN Yu-hong
%A WANG Da-yong
%A WAN Xiao-jun
%A SHI Meng-quan
%A WU Fei-peng
%A <br>张韬
%A 陶世荃
%A 翟千里
%A 万玉红
%A 王大勇
%A 万晓君
%A 施盟泉
%A 吴飞鹏
%J 光子学报
%D 2008
%I 
%X According to the mechanism of grating formation in photopolymers,the dark enhancement was investigated for a novel photopolymer by using the method of mathematic model combine with experimental measurements.The result indicates that the weaker intensity of writing light resulted in more dark enhancement,even though the same saturation was reached for diffraction efficiency with different writing intensity.In order to exploit this effect to enhance diffraction efficiency,experiments of non-continuous holographic exposure were designed and conducted,The diffusion time constant of the material was obtained to be 21 s by fitting the experimental data of dark enhancement with theoretical model.Based on the measured diffusion time constant,the period of non-continuous holographic exposure was determined.The experimental result indicates that the diffraction efficiency of a non-continuously exposure is higher than that of continuously one in the same recording condition.
%K Holographic storage
%K Photopolymer
%K Diffraction efficiency
%K Dark enhancement<br>全息存储
%K 光致聚合物
%K 衍射效率
%K 暗增长
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=9F6139E34DAA109F9C104697BF49FC39&aid=9F80CFEFC29B9CAFD0B23F11157A6C31&yid=67289AFF6305E306&vid=42425781F0B1C26E&iid=708DD6B15D2464E8&sid=D80D149F88BBF67B&eid=13DBB7F2E4FCEC67&journal_id=1004-4213&journal_name=光子学报&referenced_num=0&reference_num=10