%0 Journal Article
%T Evolution of emmitted light intensity in two-photon pumping random lasers<br>双光子抽运随机激光器中辐射光能量的演化
%A Wang Ke-Jia
%A Liu Jin-Song
%A <br>王可嘉
%A 刘劲松
%A 吕健滔
%A Wang Ke-Jia
%A Liu Jin-Song
%A Lü Jian-Tao
%J 物理学报
%D 2007
%I 
%X Based on the diffusive equation of incoherent-feedback random lasers,whose gain is modified by adding a saturation factor,the evolution of the emitted light intensity in two-photon pumping random lasers varying with time is studied by use of finite difference method.Numerical results show how the intensity of emitted light varies from the spontaneous radiation,which undergoes amplification at small-signal gain,to the steady output due to the saturation effect.It is noted that the nonlinear effect,e.g.saturation of gain,in such laser system can be achieved under low intensity conditions due to the disorder of media.Our results give a theoretical support to obtaining the steady output of the two-photon pumping random lasers.
%K random lasers
%K two-photon pumping
%K saturation effect
%K optical properties in disorder media<br>随机激光器
%K 双光子抽运
%K 饱和效应
%K 无序介质中的光学效应
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=46D3E4ADDB4F954C&yid=A732AF04DDA03BB3&vid=014B591DF029732F&iid=DF92D298D3FF1E6E&sid=FA50A92DF57A0545&eid=127025FFA69EDD90&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=22