%0 Journal Article
%T Absorption Changes Induced by Off-Resonance Driving a Degenerate Two-Level System<br>
%A CAI Jin
%A ZHOU Hai-Tao
%A WANG Wen-Qi
%A LI Zhong-Hua
%A LI Tao
%A ZHANG Jun-Xiang
%A <br>
%J 中国物理快报
%D 2008
%I 
%X The alteration of atomic absorption via quantum coherence is observed in the degenerate two-level atomic system. It is shown that when the detuning of coupling field equals to that of probe light, i.e. two-photon resonance, the reduction of atomic absorption via electromagnetically induced transparencyoccurs. However, when we tune the coupling field to two-photon off-resonance, the enhancement of absorption is obtained for the probe field. The influences of one-photon detuning and intensity of coupling field on absorption are also experimentally demonstrated.
%K 42
%K 50
%K Gy
%K 32
%K 80
%K Qk<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=40776D63A06838AA341B1E8B93302178&yid=67289AFF6305E306&vid=C5154311167311FE&iid=B31275AF3241DB2D&sid=E7B46CD86468D9A6&eid=8C654DF4DA4F6E06&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0