%0 Journal Article
%T The mechanism of ablation of sapphire by an ultra-short pulse laser<br>超短脉冲激光照射下氧化铝的烧蚀机理
%A Li Xiao-Xi
%A Jia Tian-Qing
%A Feng Dong-Hai
%A Xu Zhi-Zhan
%A <br>李晓溪
%A 贾天卿
%A 冯东海
%A 徐至展
%J 物理学报
%D 2004
%I 
%X Based on the linear dependence of laser pulse energy on the ablation area, the ablation threshold fluence of sapphire is calculated in this paper. Meanwhile the threshold fluence of sapphire as a function of pulse duration is studied with an ultra-short pulse laser. The experimental results agree well with the theory of avalanche mode. Finally we discussed the photon absorption mechanism of the conduction band electrons in Al 2O 3.
%K femtosecond laser
%K sapphire
%K threshold fluence
%K avalanche mode<br>飞秒激光
%K 氧化铝
%K 破坏阈值
%K 雪崩模型
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=32FFBA25078BF988&yid=D0E58B75BFD8E51C&vid=8E6AB9C3EBAAE921&iid=DF92D298D3FF1E6E&sid=652823AEB83E4347&eid=835C863860D9932E&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=19