%0 Journal Article
%T High-gain amplification of weak Stokes signal of stimulated Brillouin scattering in water<br>水中受激布里渊散射微弱Stokes信号光的高增益放大
%A Gao Wei
%A He Wei-Ming
%A Dong Yong-Kang
%A <br>高玮
%A 吕志伟
%A 何伟明
%A 董永康
%A Gao Wei
%A Lü Zhi-Wei
%A He Wei-Ming
%A Dong Yong-Kang
%J 物理学报
%D 2008
%I 
%X The influences of the delay time, the cell length and the pump energy on the gain amplification of weak Stokes signal of stimulated Brillouin scattering (SBS) in water are investigated theoretically and experimentally. In the experiment a frequency-doubled seed injection Nd:YAG laser with a pulse duration of 7.2 ns was used. Results showed that the pump pulse should lag the Stokes signal pulse by an amount equal to pulse half-width to obtain the maximum gain. Depending on the pump energy the signal below 10-5 mJ is linearly amplified. By using CS2 as amplifier medium, a Stokes signal of 1pJ from water is amplified with high gain (7×107) in the regime below the pump's self-SBS threshold.
%K Brillouin amplifier
%K signal gain
%K delay time
%K pump energy<br>布里渊放大器，
%K 信号增益，
%K 延迟时间，
%K 抽运光能量
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=A2FFBEF5214A36D0F7238BD9FB6F65F0&yid=67289AFF6305E306&vid=11B4E5CC8CDD3201&iid=E158A972A605785F&sid=47894E4C9A5BB4C6&eid=4F82C471BB13578B&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=9