%0 Journal Article
%T Threshold and saturation properties of two-dimensional random lasers and mode selection<br>二维随机激光器的模式选择及阈值与饱和特性
%A Liu Jin-Song
%A Liu Hai
%A Wang Chun
%A Fan Ting
%A Wang Xiao-Dong
%A <br>刘劲松
%A 刘 海
%A 王 春
%A 吕健滔
%A 樊 婷
%A 王晓东
%J 物理学报
%D 2006
%I 
%X Based on the time dependent theory of random lasers, which was established via combining Maxwell equations with the rate equations of a four-level atomic system, the output intensity of lasing modes varying with the pump rate and area as well as the medium's size and shape is simulated for two-dimensional random media by use of the finite difference time domain method. Results show that the pump-rate dependence of the output intensity presents not only a threshold property, but also a saturation property, just like that of the lasing modes in conventional lasers. Based on the dependence of mode property on the medium's and pump's parameters, the mode-selection approaches are proposed for two-dimensional random lasers, which are quite different from those performed in conventional lasers.
%K random lasers
%K mode selection
%K optical properties in disorder media<br>随机激光器
%K 模式选择
%K 无序介质中的光学特性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=9A2BFC7FFF758544&yid=37904DC365DD7266&vid=E514EE58E0E50ECF&iid=5D311CA918CA9A03&sid=5E3E3304E85F8B42&eid=54353D11BB9C1A6C&journal_id=1000-3290&journal_name=物理学报&referenced_num=4&reference_num=27